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A Crossover between The Dresden Files and High School DXD by Gabriel Blessing, that started out like another typical crazy week for Harry Dresden.

In this case, fighting a Walker on the wrong side of the Outer Gates after sealing them. As a last ditch effort, Harry decided to use the most destructive method he knows to deal with it; combining Hellfire with Soulfire. It worked... somehow.

However, he finds another problem; a horizon-spanning dragon, that even the Walker is terrified of, now approaching both of them. With no other option, Harry turned to Lash for help and opens a Way....

And ends up in Japan, of all places. In a teenage body. Long story short, he enrolled in Kuoh Academy and Hilarity Ensues.

So, read on as Harry rediscovers how much he hates hormones, bullies innocent school devils, and indulges in Buddy Cop antics with the voices in his head! The omake containing the Gender Bender episode starts here.

The recursive fanfiction continuation is here.


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    Tropes Present in Beyond the Outer Gate Lies... 

Beyond the Outer Gate Lies... provides examples of:

  • Adaptational Early Appearance: The Hero Faction appears in this fic much earlier than they do in canon; kidnapping Harry at the end of the Kuoh Conference to keep him out of the fight and try to recruit him.
  • Almost Kiss: Harry and Sona have a Slap Slap Almost Kiss; she is pulling his cheeks and he is mussing her hair when they trip and fall into a compromising position. They then almost kiss, but Saji stops them.
  • Angels, Devils and Squid: Adds The Dresden Files Outsiders as the Squids to the existing Highschool Dx D Angel and Devils.
  • Author Appeal: Compared with his other works, Gabriel Blessing shows certain taste in his stories:
  • Bizarro Universe: Harry refers to the Highschool Dx D universe as this, and it fits the profile. In The Dresden Files, devils and angels (both regular and Fallen) are pillars of creation, have nigh-infinite power, can only be created by God, and are almost as hard to kill, and God is alive. Magic functions on willpower and emotion, and causes users to become Walking Techbane. And the wizard never gets the girls. In Highschool Dx D, most devils aren't that much stronger than humans, they can reproduce normally or turn humans into devils, and can be killed almost as easily, and God Is Dead. And magic is performed with complex math, and has no negative effects on technology (what first tips him off to the fact that he's in a new world is the fact that the hospital machinery he was hooked up too was still functioning, even when his emotions were flaring). He's also getting some female attention...
  • Blind Jump: This is how Dresden wound up in the middle of Japan in a teenaged body.
  • Break the Haughty: Raynare openly mocks Harry even after he practically handed her ass. Then Harry uses Soulgaze on her.
  • Bully Hunter: Harry, which is how he got kicked out of the school he attended before Kuoh.
  • Bullying a Dragon: Literally, the Hero Faction wants to kill Great Red, a dragon with teeth bigger than Dresden is tall, as said wizard puts it, and leaves others alone as long as they don't hang around the Dimensional Gap, to prove humanity's strength. And this doesn't even take into account his defense of the world against the Outsiders...
  • Combat Pragmatist:
    • Harry's entire combat style, as usual. From trying to get guns again, mentioning how he loves that no one ever sees a Squishy Wizard throwing a punch coming, and even saying that "if you're not cheating, you're not trying".
    • This attitude also seems to be rubbing off on Issei.
  • Comedic Spanking: Issei and Saji get spanked by Rias and Sona, respectively, for being reckless during a mission. What makes it even funnier is that when Issei begs for Harry's help, he can only shrug and point out that there are places where people pay for that sort of thing before leaving Issei to his fate.
  • Cosplay Otaku Girl: Lash. Outfits she has appeared in include a Bunny Girl costume, maid outfits and a gym uniform (complete with bloomers).
  • Crossover: The Dresden Files and High School DXD.
  • Dark Is Not Evil: Harry is shocked to discover this applies in this world, since in his own world, devils and monsters are almost invariably evil.
  • Dead Fic: As of 2017, it's been well over two years since the last snippet of the incomplete fourth chapter was posted. The continuation fic picks up where this one left off.
  • Dirty Old Man: Despite being physically in his teens, Harry feels his way about his unexpected love interests, since he's mentally in his 40's, and is torn between both his attraction to them and that he feels a personal connection to them, and the fact that he is technically old enough to be their fathers (in some cases).
  • Fountain of Youth: Harry is aged down to his teens again when he enters the Highschool Dx D world.
  • Gender Bender: Harry gets caught up in the Occult Research Club's shenanigans with the gender bending gun.
  • Harem Nanny: Lash, in a twisted way.
  • Hoist by His Own Petard: A comedic version— when Harry meets Sirzechs, he calls upon his rusty manners, but can't help tossing out a "Sympathy For the Devil" reference. A moment later, Sirzechs gets the joke and continues it, causing Harry to briefly concede defeat.
    Harry: My God, my minister was right all along, Rock and Roll really is the devil's music.
  • Horrifying the Horror:
    • Even the Outsiders are scared of Great Red. Harry eventually theorizes that he's what keeps them out of that world
    • A Soulgaze with Raynare sends the Fallen into a Villainous B.S.O.D., begging Rias's peerage to keep Harry away from her.
  • I Have Boobs, You Must Obey!: fem!Harry in the omake has this super power.
  • I'm Taking Her Home with Me!:
    • Harry to Asia. Every time she seems upset Harry gets the urge to take her some place nice and shower her with ponies and kittens.
    • He feels similarly about Koneko in her more vulnerable moments.
  • In My Language, That Sounds Like...: A lot of Harry's initial problems with Sona where from the results of a misunderstanding. A student asks Harry if he's a yankee. Harry, being from Chicago, says yes. He didn't realize that the student heard of his bad reputation and that "yanki" was Japanese slang for delinquent. Sona has been misguidedly trying to reform him.
  • I Resemble That Remark!: Lash remarks beyond her hopes, Harry didn't set the building on fire after Sona's failed recruitment. Harry says that he doesn't set every building on fire and he will burn alive the guy who started the rumor. Lash snarks that would definitely prove his point.
  • I Take Offense to That Last One!: After finding out that Georg is a fanboy, Harry snarks that if he's got a stalker, why couldn't it be a hot, overeager, sexually aggressive cheerleader, prompting Siegfried to jokingly suggest Jeanne put on a cheerleader uniform, to which she objects, causing Harry to lampshade how she only objected to the cheerleader part.
  • Light Is Not Good:
    • Harry finds out the hard way that not only is Dark Is Not Evil, the side of the angels are just as flawed as everyone else. Justified since God Is Dead, leaving his imperfect creations to try to carry on as best they can.
    • Same goes for the Hero Faction. Their intentions might be noble, giving normal humans a place in a world of magic and monsters, but unfortunately, their tactics are clumsy and badly planned, and could cause more damage than they solve.
  • Minor Living Alone: Harry lives and supports himself to get out of the foster care system.
  • No Endor Holocaust: In the fragment of a chapter in the same thread the omake is published in, Harry rubs Ddraig's face in the damage he caused fighting a certain white dragon when he's despairing at the whole "Oppai Dragon" thing.
  • Occidental Otaku: Harry gains shades of this as being stuck in Japan makes things like anime easier to get a hold of than his usual fair. The fact that he's no longer Walking Techbane helps, since he can access the internet now.
  • Oh, Crap!: Harry and Lash's reaction when they realize just how big Great Red is.
  • Omniglot: Devil have Language, like in DxD canon. Lash tops it by giving Harry the ability to not only speak any language, but also read and write them.
  • Our Demons Are Different: There are massive differences between demons from Dresden verse and DxD verse. For one, Dresden's demons only care about mortal business generally because of hunger or need of terrifying them. The DxD demons (or rather, devils) though act like your normal, everyday people (Most of them anyway). This is why Harry acts with such hostility to the Student Council when he firsts learns what they are.
  • Poor Communication Kills: Harry threatens the Kuoh Student Council because he's used to much less friendly supernatural beings and the fact that devils where he comes from are very different beings. Once the matter is cleared up he formally apologizes and works alongside of them.
  • Recursive Fanfiction: Beyond the Outer Gates Lies... A High School Library?, a spin-off that started when a reader suggested Kusaka Reya join Harry's list of admirers, and Gabriel Blessing challenged him to write it.
  • Required Secondary Powers: Harry is a bit flummoxed by how many Forbidden Valor View has with its time-stopping power.
  • Screw This, I'm Out of Here!: Harry reaches this point at the end of the fight with Kokabiel, where it just gets ridiculous. Lash has to point out that they're still stuck, no matter how much Harry wants to leave.
  • Seen It All: Harry and Lash certainly think so. So, God being dead is certainly a Wham Line for them.
  • Shipper on Deck: Lash heartily encourages Harry to pursue a relationship with his female admirers, and, in the continuation, cheers him on whenever he finds himself in an intimate moment with one of them.
  • Smug Snake: Raynare.
  • Snark-to-Snark Combat: Harry and Sirzechs engage in a low key, friendly version. Harry has a title to defend after all.
  • Squishy Wizard: Harry, self-admittedly, though the Mantle circumvents this somewhat.
  • Tempting Fate: Harry's "Wizards never get chicks, after all," and Sona's "Dresden-kun, I am not, nor ever will be, interested in you romantically."
  • Those Two Guys: Like in DxD canon, there's Matsuda and Motohama, Issei's perverted friends. In the continuation fic, they constantly pester Harry for magical aid in peeping on their female classmates. Harry goes out of his way to sabotage their efforts.
  • Token Human: Harry is mostly Human (if one looks past Lash and the Winter Mantle), and thinks of himself as one; all of the rest of the main characters are Devils, and most of the secondary characters are non-Human.
  • Trapped in Another World: The gates back to Harry's Earth are closed, and cannot be opened from this side. However, the continuation reveals that two entities can contact their counterparts on the other side in limited ways: Uriel and Santa Claus.
  • Troll:
    • Once Harry learns about the Devils' gift of tongues he regularly has Lash switch languages mid-conversation just to see how long it takes them to notice.
    • Later, after Issei finds out about Lash, and how she can manifest herself as a pretty woman, Harry pretends that she's taking her clothes off to get Issei to freak out, and Asia to try to get his attention by stripping. Lash notes that normally she'd be mad at him for lying about what she's doing, but approves of the results.
  • True Companions: How Harry and Issei see each other. It's pretty telling that, in Winter Knight mode, Harry didn't see Issei as threat, but a companion.
  • Unable to Support a Wife: Referenced by Harry as a reason Sona and Tsubasa shouldn't be interested in him.
    Harry: " I can barely make rent half the time and I'm having trouble making enough money to even pay my bills, so its not like I would be able to treat either of you to dates or things like that."
  • Unwanted Harem: Though a more fitting term would probably be reluctant harem. Harry is romantically drawn to all his admirers but feels conflicted about becoming involved with them, due to their age and his difficult relationship history.
  • Unwitting Pawn: Harry considers the possibility that the Outsiders are manipulating the Hero Faction in order to try and gain a foothold in the DxD reality by killing Great Red, the main thing keeping them out.
  • Villainous B.S.O.D.: Raynare, after Harry Soulgazes her. She goes from haughty to 'begging'' that Harry stay away from her.
  • Walking Techbane: The fact that he's not this anymore is Harry's first clue that despite appearances he's a long way from home.
  • Weirdness Magnet: Harry lampshades his status as one when expressing his surprise at not getting involved with the Riser mess at any point, given how he tends to get drawn into every major supernatural mess that happens anywhere near him, and when Sona offers him a contract, reminding her how often he gets into trouble. In the continuation Azazel blatantly refers to both him and Issei as trouble magnets.
  • Well-Intentioned Extremist: The Hero Faction, made up of the descendants and reincarnations of great heroes like Hercules, Joan of Arc, Sigfried and so on. Their goal is to give humanity a position of power in the world, but unfortunately, they also want to kill Great Red, who is basically the Big Good of the setting, and the worlds biggest defender against the Outsiders. They want to kill him mainly because he's a dangerously powerful dragon, despite the fact that he's almost never out of the Dimensional Gap. They also dislike supernatural beings overall, regardless of alignment, despite their Chaos Brigade affiliation, and are perfectly willing to put civilian humans in danger if it means achieving their goals, and even brainwash members so they can't reveal anything about the group, and Cao Cao even considers young Heroes their property, given his words about Alice in the continuation. And that's not even considering how Herc is the Semi-Divine descendant of the now godly original Heracles.
  • What Are You: Poor, poor Raynare.
  • Wrong Context Magic: Harry's usual magic is derived from his willpower and belief (and makes him Walking Techbane in his own world, but not in the world he's currently in), while their system of (normal) magic uses what amounts to rituals in his, where he just has to put in the power and not the belief, so it doesn't need him trying to micromanage it (and has no apparent effects on technology), and can do things the Laws of Magic of Dresden's world forbids with no risk of corruption. In addition, Soulfire isn't something native to their world so it's not as easy to deal with.
    • Things like Rias' Power of Destruction and Sacred Gears are this to Harry and Lash, which excites the latter to discover something new.

    Tropes Present in Beyond the Outer Gate Lies... a High School Library? 

Beyond the Outer Gate Lies... a High School Library? provides examples of:

  • Accidental Truth: The Campione! light novel series exists In-Universe and Rossweisse was more than a tad uncomfortable that their author got Athena's backstory better than most actual mythologists.
  • A-Cup Angst:
    • Mild example with Sona, she's a bit self-conscious about the fact that she's the least endowed of Harry's love interests, and worries that Harry might not find her as appealing as the others. Harry of course couldn't care less about cup-sizes, nor is Sona as flat as she seems to think.
    • Also Oakley when she meets Behemoth.
  • Adaptive Ability: Harry suggests experimenting with getting Sacred Gears to aborb other magical items and effects, like Issei's been doing with the Boosted Gear, to increase their powers.
  • Aerith and Bob: An unusually literal example; One of the bodyguards of the Senju clan is actually named Bob. And she's a woman (well, female Tengu). She explains it's because her parents are fans of Bob Dylan.
  • All for Nothing: Jeanne points out that their efforts in Kyoto were a total waste of time, effort, and resources, and suggests that they go after Trihexa instead of Great Red, since one of their "allies" is unsealing it anyway.
  • All Girls Want Bad Boys: While calling Harry a "bad boy" might stretch it, both Tsubasa and Serafall confesses that his dark and tougher aspects is part of what they find attractive in him.
  • Alternate Self: Azazel's lab assistant is the DxD version of Lasciel, who looks just like Lash's projection, though their only real shared trait so far is being attracted to Azazel.
  • Amplifier Artifact: One of the Hero Faction Mooks Harry faces is a Stalker with a Crush to Georg Harry calls "Goth Hermione" with a Sacred Gear that makes her spells more powerful, her Balance Breaker allowing her to fire five of the same attack spells at once, each with a different elemental attribute.
  • Anti-Magic:
    • The Beholders can use this under certain circumstances.
    • Leonardo's Anti-Monsters in the Kyoto arc.
  • Apocalypse How: The War of Forgotten was a Type 2. 90% of humanity was killed and the survivors descended into Stone Age barbarism just trying to survive. The gods could not help, because they were too busy recovering from preventing it from becoming a Type X.
  • Appropriated Appelation: After hearing of Harry's "Boss Beholder" nickname (shortened to BB), Argus makes it official, much to the newly dubbed BB's displeasure. When he hears about the "Rini" name for the female pink Beholder, he demands an explanation in the hopes that it'll be worse than his nickname.
  • Artifact Title: The "High School Library" in question has not shown up on screen in since the single digit chapters.
  • Asexuality: While she later admits she was exaggerating, Serafall calls Azazel this, pointing out that he's more focused on Sacred Gears than any real relationships.
    • Tomoe might be this to some degree. Harry's info is only third-hand, but he hears that when the female Council members where talking about boys, she acted like she never even thought about it, and takes a good deal of prompting to get an answer out.
  • As Himself / For Halloween, I Am Going as Myself:
    • Harry is dismayed to find out that Chris Hemsworth is the stage name of the real Norse God Thor.
    • Harry takes it better later when he learns that Kevin Sorbo is the real Heracles. He even taunts the Hero Faction's Heracles with that fact.
  • The Assimilator: He Who Walks Below managed to assimilate the magic users he drew into his seal with him, integrating with reality and becoming stronger, eventually becoming Trihexa.
  • Attack Its Weak Point: Oakley's Balance Breaker, in addition to allowing her to see through shapeshifting, lets her see weak spots, like an ankle injured from a bad step on Mulan during her battle.
  • Attack of the 50-Foot Whatever: Remus's Sacred Gear, Colossus of Rhodes, takes him from 6 feet tall up to 60 feet tall.
  • Badass Boast: Harry gives one to Argus that is more than a little similar to the one he gave Marva:
    Harry: However you normally do it, you are going to tell every one of your Beholders to get the Hell out of Japan. Because if I ever see any of them again; if I ever even think that they are coming after me, or one of my friends, I will hunt them down, and then come after you.
    Argus: While I cannot stop you from finishing poor BB. I highly doubt you can make good on that little threat.
    Harry: You might not have heard what I told BB. But your Beholders are already done. I have the spells to track them, to block them, and to kill them. I am going to make those spells available to every magician, Devil, Fallen, Angel, Valkyrie, and any other supernatural being that wants them. Their days of being near mythical phantoms, untraceable and untouchable, are over. With any luck, in a year you won't dare send a Beholder anywhere that there might be any kind of magic user. And as for you, maybe I can't kill you on my own. But I'm on good terms with the leaders of the three factions. Most of them owe me some favors, and I'm friends with the two you seem to fear the most. And I know five True Longinus users. Two of them would help me if I asked and the other three I might not be all buddy-buddy with, but I can easily push their buttons to get them to do what I want. And that's just the simple connections. Give me a reason, Argus, and I will gather up every god, demi-god, and god-killer I can, and I will sic them on you. We will find whatever hole you are hiding in. And then you won't have to worry about Hera's curse anymore. Comprende?
  • Berserk Button: Besides hurting innocents and people he cares about, don't fuck with people's minds around Harry.
  • Big Creepy-Crawlies: One of the creatures Leonardo makes are 'flies the size of small dogs'. Not huge, but still big for a flying insect. Also, the hybrid griffins he makes may count; they are based on normal griffons in size and basic shape, but have dragonfly wings and scorpion tails.
  • The Big Damn Kiss: Harry has kissed all 4(?) of his girls, but his kisses with Serafall and Sona fall best into this trope. Serafall's kiss left Winter Harry weak in the knee, and assisted her Logic Bomb to save him. And Sona's kiss came last, and was the most romantic/heartfelt. And led to more; very nearly much more.
  • Body Horror:
    • The severity of Harry's scars are emphasized a lot more in this fic, and even commented on by Sona when she sees Harry without a shirt for the first time. However, their size is slowly decreasing thanks to long-term healing by Asia, which is reducing them to tolerable levels. especially his mutilated left hand (he can't get rid of them entirely without raising questions from the non-magic students).
    • Harry is badly injured in the fight against the Beholders, and it almost costs him his leg, which is described in almost sickening detail. Thankfully, they have Asia on hand to heal him.
  • Bookworm: Harry and Reya bond because they are bookworms. Harry notes that books in Bizarro World (or just in Japanese) are subtly different, making rereading them more interesting.
  • Boomerang Bigot: Mulan purportedly hates Japan for their actions against China in WWII, but is apparently an anime fan, to the point that she's completely fluent in the language. It is implied by Oakley that Mulan's prejudice is probably due to Cao Cao's brainwashing.
  • Bottomless Magazines: 2nd Amendment only needs to change weapon shapes to reload. Even Azazel isn't sure where the ammo comes from, but it's otherwise normal.
  • Brainwashed and Crazy: Christine Lee/Mulan was brainwashed even more heavily than Oakley or Yasaka to get her eager to participate in the attack on Kyoto.
  • Brick Joke: Whenever Harry gears up for battle, he takes a baseball with him. Not an enchanted one, just a normal baseball. If he gets called on it, he insists that it might come in handy. It shows up again in A Storm Gathering? and is used to incapacitate a Hero Faction mage.
    • One going back to the original story; during the gender-bender incident, Harry sarcastically tells Lash he will be sure to have a larger t-shirt on hand for the next time Azazel turns him into a girl. In A Terrible Thing to Waste? he has a t-shirt on hand for Oakley (who had been stripped by Ise's Dress Break), and when he gives it to Tsubasa to put on the unconscious girl, the Rook notes that the t-shirt is much larger than what he normally wears.
  • The Caligula: Argus. He sends out Beholders to make a treaty with Human kings. When some of the kings refuse, and others try to negotiate, he has a fit of rage and forces the Beholders to kill them. Even the kings who readily agreed to his terms. Then he forced the Beholders to fight each other as punishment and for his amusement.
  • The Cameo:
  • Canon Welding: Sona's Knight, Meguri Tomoe is the granddaughter and student of the Bizzaro World version of Yoshimo Shiro (on her mother's side).
    • The War of Forgotten? bolts the two canons together and welds up the seems. The reason Ophis originally left the Dimensional Void? She was infected by Nemesis. The ancient gods started to create the Magogs to stop the Outsider invasion that follows. And Trihexa used to be known as He Who Walks Below.
  • Can't Have Sex, Ever:
    • An unfortunate reality for the Angels, who are unable to have sex without succumbing to Lust and becoming Fallen. The higher-ups are trying to figure out a way around this, as Angels are just as interested in sex as everyone else.
    • Harry suggests that the issue might just be that the Angels having sex aren't married when they're doing it.
  • Cats Are Magic: Harry's cat Mister somehow finds his way to Bizarro World, much to Harry and Lash's shock. They have no idea if it's the original Mister who has somehow crossed universes, the local counterpart of the original Mister like Santa Claus and Uriel or something else entirely, but he acts just like the original Mister, looks exactly the same under the Sight, and apparently sees Harry as his owner (as much as a cat normally does anyway). He also might be able to No-Sell Forbidden Balor View.
  • Cats Are Snarkers: Mister manages to do this without speaking. His dialogue is limited entirely to meowing (written as "Nya").
  • Celebrity Paradox: Harry has now read and is a big fan of the Codex Alera books. He tells Sona that if he ever needs someone to write his biography, he will ask Jim Butcher. Harry even runs a Codex Alera game for Sona's Peerage using the official, licensed RPG based on the FATE system.
  • Celibate Hero:
    • A very rare self-imposed example. Harry's girls are perfectly willing to consummate their relationship already, but Harry himself, no matter how much he WANTS to, doesn't feel comfortable doing so emotionally, mostly related to his true age and origins. Not that they haven't had a few close calls in moments of passion.
    • Another self-imposed example in Issei and his harem. Irina can't have sex or she will Fall. Koneko can't have sex or she will die. So all the members of Issei's Harem agree that none of them will have sex until all of them can. Both problems are being worked on, but it is not clear exactly how long either fix will take.
  • Chekhov's Skill: The language changing spell from An Expected Result? returns A Rearguard Action?, allowing Oakley to read the sign on the side of a Japanese building (Oakley only speaks English) and know that it is a school.
  • Chivalrous Pervert: While it obviously applies to Issei, the trope itself is played with by the story itself. Since the setting is that of a light novel/Ecchi anime, it keeps setting up situations where this would normally come into play, but since Harry ISN'T a character from that type of media, his reactions are different. While certainly chivalrous almost to a fault, Harry didn't originally have any sort of interest in a harem, and is utterly dumbfounded by the way fate seems to draw him towards one.
  • Clark Kenting: Referenced and hoped for by Harry, who thinks people might not recognize Lash as a copy of Dx D's Lasciel, since Lash is wearing a revealing toga (vs. Lasciel's layer of concealing clothing), has her hair expertly done (as opposed to pinned in a haphazard bun with whatever she has on hand), and yes, does not wear glasses. If the similarities are noticed despite these precautions, he plans to just say that Lash based her appearance off of Lasciel, which is technically true.
  • Clingy MacGuffin: 2nd Amendment. It is one of the artificial Sacred Gears Azazel has created. When he asked Harry to help him test it, it refused to detach from Harry when the tests were done. Both Harry and Az suspect the other might have planned it.
  • Color Failure: During their conversation on the Outside, Rossweisse makes an expression that has Harry lampshade that she'd be doing this in an anime.
  • Comically Missing the Point: At the convention, a fan takes a Polaroid of Serafall and reluctantly includes Harry. Then he drops the instant photo and runs away. Serafall picks it up, and she and Lash both complain that he cut Harry's head off. Completely ignoring that he also managed to capture the dark and malevolent shadow that is Lash. When Harry protests, Lash admits it doesn't look much like her, either.
  • Continuity Nod: A character based on Harry appears in the "Oppai Dragon" Show Within a Show. Wearing a hat. Harry complains about the hat, but is told it won't be changed.
  • Cool and Unusual Punishment: Harry's planned death curse for BB? To blind the Beholder. Fortunately, he gets saved before he has to go through with it.
  • Cool Mask: Oakley's Balance Breaker takes the form of a mask.
  • Cool Old Guy: Arashimaru, the older gentleman Harry and Serafall meet at the convention. He is the second person to ask to join their pickup board game, against Japanese custom (the first barely counts since she worked for the game company). He tells Serafall about the book sale that Harry takes Reya to. He is also there selling some of his deceased husband's books, and points out a magician selling actual spellbooks to Harry. And finally he is fully aware Harry is dating both Serafall and Reya, and he just tells Harry to be good to them.
  • The Corruption: Leaks in Trihexa's first seal, from when he was the Walker He Who Walks Below, caused his corruptive influence to leak out due to his nature changing from assimilating the few magic users helping seal him that he had dragged in with him. It especially affected the Devils due to the fact that he grabbed more of them, leading to the start of the Deal with the Devil stuff, but it also helped lead to the first Angels that started Falling, and thus what would become the war between the factions.
  • Cosmic Plaything: Harry notes that despite the fact that God Is Dead is in effect, he still feels that there's some higher power that likes messing with him. Sona, knowing how much of a Weirdness Magnet he is, can't really argue.
  • Covert Pervert: Harry is fairly sure that a certain crossdressing vampire is straight because of some interesting websites he showed Issei.
    Harry: I swear, it's always the quiet ones.
  • Crippling Overspecialization: The Anti-Monsters Leonardo sets upon the group in the Kyoto Arc are these. They're effective against Devils, and resistant to normal magic (particularly Fire and Ice) to account for Dresden, but they're not very effective on Issei due to his Dragon traits, vulnerable to lightning and water spells from a certain Valkyrie, and weak against normal bullets, rendering them less effective against the mixed group than they would be against an only Devil party. When Leonardo makes adjustments for these weaknesses, he ends up giving them new ones, implying that he can only give them so many powers and resistances at once.
  • Crisis Makes Perfect: Oakley is finally able to achieve her Balance Breaker when she was losing to Mulan, and decided not to give up.
  • Curb-Stomp Battle: Nike was trying to get Remus to reveal the location of Leonardo. Once she realizes he doesn't know, she takes him out in two hits. He was 60 feet tall at the time.
  • Cutaway Gag: Harry saves himself and Sona's Peerage from getting yelled at, by putting out that it was Azazel's job to contact her. Cut to Motohama asking why Azazel is under the bus.
  • Cut Lex Luthor a Check: Harry has a much easier time making money from his abilities in this setting, and makes a tidy profit from selling magically enchanted clothes and jewelry to the supernatural factions, on top of his detective work.
  • Deader Than Dead: When Argus remotely hijacks his henchman BB, he states that doing so has effectively erased BB's personality for good, and even if the body survives the battle, the mind will be gone.
  • De-Power: Harry's inspired a way of removing things like Evil Pieces, Brave Saints, and Sacred Gears without harming the host, which do much for keeping the Zeroes contained.
  • Do Wrong, Right: Harry seems ready to scold Sona for using her water dragon to intimidate Riser (after Ise gave him a severe case of dracophobia). Instead he tells her she could make the dragon much more scary, and proceeds to illustrate.
  • The Dreaded: The Outsiders, especially the Walkers, to those who know of them.
  • Driven to Suicide: The Beholder 2-Delta in Shizukesa's backstory. She couldn't handle the guilt for killing numbers 6 and 4 (4 by choice). So she challenged something she knew she couldn't beat and got herself killed.
    • One of the corrupt rangers kills himself, apparently fearing retribution from the Brigade.
  • Dumb Muscle:
    • Hercules/Herakles of the Hero Brigade is muscle and little else. Even worse, he's not even the real reincarnation of Herakles, he's just some jerk with Super Strength! (Dresden has mentioned that the original, who actually IS Kevin Sorbo, is a god now and not at all amused at the pretender using his name).
    • It turns out that he's that Hercules's Semi-Divine descendent, a few generations removed. The original still doesn't like him, for obvious reasons besides his stupidity, and keeps him away from him and his family.
    • This works against him when Tsubasa blasts him with a "Fuego". The blast is weak, but since Herc never finished school, and thinks explosives and flames mixing makes explosions all the time...
  • Early-Bird Cameo: Oakley shows up briefly in the (fic original) Alice White arc, before becoming more important in the adaptation of Volume 9 (the Kyoto School Trip).
  • Eldritch Abomination: Trixeha turns out to have once been the strongest of the Walkers of the Outside, He Who Walks Below, before it assimilated the unlucky magic users it managed to drag in when it was sealed the first time.
  • The Empath: Alice, as one of the powers she gets as the reincarnation of Atalanta, has an empathic sense that lets her sense what a person is like. Harry notes that the legend that power came from, where Atalanta punished her failed suitors proportionately to their true nature, was false in his own world, but is apparently true in Bizarro World.
  • Ephebophile: Herc of the Hero Faction is apparently this. Him expressing an "interest" in Jeanne's sister Alice and his tendency to be a bit forceful about it (namely being a bit overly rough in training sessions, not watching their back in battle and going after anyone he thinks has an interest in her) is one of the reasons Jeanne asks Harry to help keep Alice out of the Hero Faction.
  • Erotic Dream: Harry has multiples the night after his first date with Sona. One is on screen, and two others are referenced when he tries to shift the blame to Lash.
  • Everyone Can See It: DxD!Lasciel's feelings for Azazel are obvious to Harry. He even compares her to Asia and her feelings towards Issei.
  • Evil Overlord List: Referenced by Harry when Vritra breaks Rule 34.
  • Extra Eyes: Beholders, naturally. However, even in her Human form, Shizukesa has an additional eye in the palm of each hand. They are completely hidden when closed, and are an additional source for her TK powers.
  • Eye Scream:
    • The Beholders (yes, the Dungeons & Dragons ones) murder humans and devils and tear out their eyes to present to their master, Argus, God of Eyes. Mihae loses one of hers to a Beholder but is saved by Harry before being killed or completely blinded
    • Issei manages to destroy Cao Cao's right eye while Georg is transporting the Hero Faction members away thanks to a boost from Sun Wukong.
  • Female Gaze: Played with when Oakley meets Behemoth. Oakley gives Behemoth a thorough up and down, before settling on her breasts. Oakley isn't sure if she is more turned on or jealous.
  • Flashback: Used fairly frequently, but specifically:
    • Any of the In Medias Res examples below.
    • An Eye Tyrant? has a flashback to how Tsubasa joined Sona's peerage.
    • Similarly, A Moment's Inattention? has a flashback to how Reya joined Sona's peerage. Plus a separate one showing Sona talking Harry into acting as a mercenary in one of her Ratings Games.
    • A Tenuous Divinity? has a flashback to not long before chapter 1 of the original fanfic (a.k.a. how exactly Harry ended up Outside).
  • Foe Yay:
    • It's hinted that Jeanne of the Hero Faction has a crush on Harry. She all but states that she finds him attractive, flirts with him, and when she's the victim of Dress Break, doesn't care at all about her nudity until she notices that Harry is watching and immediately becomes embarrassed and covers up.
    • While not an enemy per se, Mihae of Riser's peerage flirts with Harry after the Ratings Game, much to the dismay of both her own teammates and Harry's admirers.
  • Foreshadowing: The scars Harry Sees in Reya in Devilish Research (part 2)? foreshadow how she originally died; they are injuries she got in the car crash, erased by Sona when Reya became her Bishop.
  • Fridge Logic: Gets brought up a few times, usually by Harry.
  • The Friend Nobody Likes: Besides Cao Cao and Georg, no one in the Hero Faction is really friendly with Herc. A few of the girls like his antics and appearance, but that's it. Even the original Hercules doesn't like him, and makes him stay away from his family.
  • Funetik Aksent: Oakley's Texas accent. It disappears when she is under the translation spell and thus speaking Japanese and after she becomes Serafall's Pawn and starts using Language. And then brute forced back into her speech pattern thanks to a combination pride and stubbornness.
  • Game Master: Harry acts as one for Sona's Peerage (and really anyone he can convince), with Lash's somewhat unwilling help. Reya also tries her hand at it, with a much smaller group.
  • Glamour: Serafall apparently uses one to downplay her beauty. There's a reason why out of all the DxD cast, Gabriel is her only proclaimed rival.
  • Going Commando: In Plans and Perils (Part 1)? Harry notes that Irina's yukata is thin enough that he can tell she is not wearing anything underneath (or as he puts it "in the traditional manner").
  • Good Cop/Bad Cop:
    • Harry and Serafall use this twice when investigating the counterfeit Pokemon cards, once against a random tournament contestant, and once against Lumiel. Harry explicitly let Serafall play bad cop, because she normally does not get to do so.
    • During the Familiar Hunting arc, Harry realized he got cast as the Good Cop to an "overabundance of ready and willing Bad Cops."
  • A Good Name for a Rock Band: Harry reflects that Dragon Made of Swords would be an awesome band name, if he wasn't watch two of his (female) friends fight it.
  • Got Me Doing It: Harry starts calling the tengu bodyguard Kendra, and even gets Azazel doing it.
  • Government Conspiracy: There's a benevolent one around, trying to keep info on the Outsiders and the War of Forgotten on the D.L..
  • Gratuitous Japanese: Done in universe; Serafall deliberately uses Japanese honorifics regardless of which language she is speaking. And while her TV show is said to be filmed in English, the opening theme is half English and half Japanese.
    • Averted in An Expected Result?; Harry's speech is suddenly in Japanese instead of English (though he narrates what he is saying), but this is to indicate that the other characters he is speaking to have lost their ability to understand Japanese.
  • Great Offscreen War: In addition to the war between the three factions, there is the War of Forgotten, where the Outsiders invaded the D x D reality after Ophis left the Dimensional Void. It caused the deaths of 90% of humanity at the time (the rest being knocked back to the Stone Age), the destruction of the entire Atlantean continent and pantheon (with an Earth-Shattering Kaboom only narrowly being avoided, and Earth's gravity being permanently reduced by .5%), and the sealed Walker He Who Walks Below morphing into Trihexa after assimilating the few magic users not lucky enough to be simply killed in its last strike before being sealed by the Heroic Sacrifice of Ur-Athena. It's called that both for the knowledge lost and because it was largely covered up (including the exact time things started) to prevent anyone from using the knowledge of it to cause trouble.
  • Heart Trauma: Mentioned as being easier to heal from for many supernatural creatures than brain damage. Hence why the spears of light from the Longinus tend to be found in the latter location more.
  • Heroic Sacrifice: Oakley takes a lethal hit for Shizukesa, because Shizukesa was in the middle of defending a school. She gets better, thanks to Serafall's Evil Pieces.
  • Heroes Want Redheads: Oakley. Since Rias is already taken, she sets her sights on Tomoe
  • Homing Projectile: Remus axe, Colossus of Rhodes has this as its Balance Break. When he throws it, it will continue to home in on the target until it scores a kill. Though that kill does not have to be on the person targeted.
  • Hot Scientist: The DxD version of Lasciel, as Harry lampshades, dresses like a librarian from the 1880s, but is still noticeably attractive even so under her heavy clothes, not that Azazel notices.
  • Humanity Ensues:
    • The Delta Beholder nicknamed Rini gets a Human form when she becomes Serafall's Knight. Unlike usual for this trope Rini/Shizukesa is happier as a humanoid, in part because of the fact that her senses as a Beholder, save eyesight (and a little bit hearing), were abysmal, as well as not having a body that matched her gender identity (the possibility of having kids of her own someday also fits into this).
    • Behemoth, Serafall's Queen, is a truer example. Originally she looked more like the Final Fantasy monster of the same name, and she tolerates the Human form because even in the Underworld, most things are not built to her scale. And even in Human form, she is taller than Harry (at least for now).
  • Humiliation Conga: It's hard not to feel a little bad for Saji when he's called in by Sona and told that a) she knows about his feelings for her and doesn't feel the same for him, seeing him just as a valuable ally and more of a younger sibling b) thinks his desires towards her are rather creepy (he's explicitly stated that he wants to get her pregnant) and c) spanks him as punishment for his resentment towards Harry affecting their last mission
  • Hypocrite: Harry briefly muses on the Chaos Brigade's hypocrisy (namely that the various faction hate or look down on other species/mythologies, yet they have all banded together).
  • I Always Wanted to Say That: Serafall says this after telling her new Pawn "you can consider this enemy territory." for the first time.
  • I Cannot Self-Terminate: Argus's mind control prevented the Delta Beholders from committing suicide. Did not prevent Suicide By Dragon.
  • Idiosyncratic Episode Naming: Most of the chapters are named Beyond the Outer Gate Lies...X?, with X being something Harry encounters or does in the chapter. One pair of chapters plays on this, A First Date? and A First Date! implying a question and a firm answer.
  • In Medias Res:
    • A Movie Marathon? starts with Harry arriving at Tsubasa's apartment for said movie marathon, and then flashes back to how she talked him into it.
    • Equity? starts with Harry and the Occult Research Club exploring an ancient ruin, and then flashes back to Azazel explaining the expedition and convincing Harry to go.
  • Insistent Terminology: When Azazel refers to DxD!Lasciel as his "research partner", she interrupts to say that she is his "assistant".
  • The Internet Is for Porn: Gasper is the more internet-savvy member of the Occult Research Club. Naturally, he's the one who knows best where to find the most "interesting" websites.
  • Jackass Genie: Harry, coming down from a Winter high, considers acting like this to the trio's requests. like giving them invisibility but rendering them blind because he's bending light around them, or giving them X-Ray Vision that works like actual X-Rays...
  • Kissing Under the Influence: Harry's first kisses with Reya and Tsubasa come while he's deep under the influence of the predatory nature of the Winter Mantle. He kissed Serafall too, technically, except she is the one initiating as part of a plan to snap him out of it. See Logic Bomb below.
  • Lack of Empathy: As Harry points out, Argus has been stealing eyes and killing people for centuries with his Beholders despite it being obvious that the eyes keep wearing out. He even says that if Argus had told his Beholders to only take one eye and leave the victims alive, he might have tried to help the god.
  • Lampshade Hanging: Azazel complains about the loitering students to explain why he doesn't just use magic to retrieve the keys he dropped under the bus.
  • Laugh Themselves Sick: Lash does this inside of Harry's head when she realizes Bizarro World Mab, far from the Manipulative Bitch she was in Dresden's universe, is as dumb as a pile of bricks in comparison.
  • Legacy Character: Herc turns out to be using the name of the original Hercules, his ancestor who was raised to full godhood. Original Hercules notably is not happy about this, and makes Herc stay away from his current family.
  • Leonine Contract: Oakley and Serafall. Played with however, because Serafall desperately wants to save Oakley, who is not so keen on becoming a Devil. Oakley actually negotiates to get her own 2nd Amendment thrown into the deal.
  • Let's You and Him Fight: Argus forces the Delta Beholders to fight and kill each other for arguing with him.
  • Living Lie Detector: Oakley, the reincarnation of Annie Oakley, has a Sacred Gear that allows her to sense lies and see through illusions. It caused her no end of grief as a result of her learning that supernatural beings existed fairly early on, although it also makes her Mook–Face Turn easier once they explain how many people could be hurt by the Hero Faction's actions and how not all supernatural beings are evil.
  • Logic Bomb: Serafall uses a sexual one to break Harry free from the Winter Mantle.
    Winter Harry: I want to have sex.
    Winter Harry: Serafall agreed to have sex with me if I go back to "normal."
    Winter Harry: But if I go back to "normal", I'll just turn her down.
    Winter Harry: Then I won't get to have sex.
    Winter Harry: But I want to have sex...
  • Lower-Deck Episode:
    • A Walk on the Wild Side? is about what happened to the younger Devils left behind in Kuoh, while the main characters are in Kyoto and the older Devils are in the Underworld. Ruruko, Gasper, Koneko, and Ravel get led around town by Mister, coincidentally(?) performing some minor heroics in the process.
    • A Rearguard Action? focuses on the defense of real Kyoto from Annihilation Maker, something the DxD canon glosses over. Though what happens is different than what little we do know of canon; though Azazel and Serafall still spearhead the efforts, the Sitri Peers attacked the Heroes with the Gremory crew, so Az and Levi-tan are instead assisted by some of the youkai, Serafall's Peerage, Nike, and Oakley.
  • Magic Missile Storm: Goth Hermione's Balance Break splits a spell in five, letting her turn a five shot Force Bolt into a twenty five bolt barrage.
  • Marshmallow Hell: Mild example, after helping Harry move to his new house, Rias insists that Issei "needs to study" and can't stay any later, which she demonstrates by shoving his head between her breasts. Issei, for obvious reasons, doesn't resist in the slightest (though Asia and Koneko are less happy about the attention their crush is getting).
  • Maybe Magic, Maybe Mundane: Mister, full stop. He just appears one day. From everything Harry and Lash can tell, he is a normal, non-magical cat, but is also completely identical to the Mister from Harry's universe, even though the Sight. Is he the original Mister, which should be impossible, especially since he shows no signs of such a transit? Or Mister's Bizzaro World doppelganger who somehow found his way to Harry or was directed to him? Or something powerful enough to imitate Mister and fool both Harry and Lash?
    • And then there is A Walk on the Wild Side. Was Mister just leading his new servant to his favorite places and the heroics were an accident? Or was it all according to plan? He also seems to manage to avoid getting hit with Forbidden Balor View's Time Stands Still power, but it's unclear whether or not it's because he's equal or greater than Gasper's power, allowing him to No-Sell it, or if it just missed him.
    • Azazel himself isn't sure where the ammo for 2nd Amendment comes from; does it create it from magic or transport it from somewhere else? Either way, the ammo is completely normal and the spent casings remain after being fired.
  • Meaningful Name: Shizukesa names her bugbear familiar (who has a body dominated by a giant eye) "William", after William Shakespeare, who either invented or popularized the word "eyeball".
  • Modesty Towel:
    • Serafall wears one of these when the girls are staying at Harry's house during the "Beholder" storyline, and she uses the shower in Harry's room with the excuse that she prefers the western style bath he has in there, though it's clear to Harry, her AND the reader that she's really just doing it for flirtation.
    • Averted with Sona when Harry accidentally walks in on her in the shower at Tsubasa's apartment (she put a silence charm up while bathing and didn't hear him knock). She's wearing a towel, but is using it to dry herself off, meaning that Harry gets a partial view of her.
  • Monster Progenitor: Argus created the Beholders after being blinded, using them to gather eyes to replace his own. Certain high-level Beholders can also use stolen eyes to replenish their own, using the cast off eyes to create weaker ones.
  • Mook–Face Turn: Oakley is referred to as one of the Hero Faction's Mooks. After Harry removes her brainwashing, and they explain to her just how many people the "Heroes" are going to kill, she switches sides.
  • More Than Mind Control: What the Hero Faction did to Oakley (and possibly others); they rescued her from a bad foster home, taught her about her Sacred Gear, and told her she was going to learn to fight monsters, which she'd been seeing for years due her Gear, and giving her an incomplete and biased account of said supernatural beings as to not trip her Living Lie Detector powers. Then they also used a normal Mind Control power so she would not notice when they didn't quite fulfill their promises, and as a safeguard against her being captured or making a Heel–Face Turn.
  • Morph Weapon: 2nd Amendment, an artificial Sacred Gear which can transform into any real gun and ammunition type the wearer can accurately picture.
  • Mr. Fanservice: Harry is surprised at finding himself this in-universe. While most of his human classmates are still wary of the tall, imposing foreign student, many of the supernatural women he's run into have expressed an interest in him, much to his dismay as he has enough trouble balancing the girls he's actually interested in.
  • Mundane Utility: Harry has a habit of repurposing calculated combat spells to mundane uses, like turning a fire shield spell into an air conditioning one, and creating a spell to laminate paper.
    • He also uses 2nd Amendment's ability to create any kind of real-life gun he can accurately picture, ammo included, to get depleted uranium to use in his experiments.
  • My Friends... and Zoidberg: In Devilish Research (part 3), Harry describes himself as being in a room with three of the smartest people in the world (using "people" a bit loosely)... and Azazel. He later repeats the line, telling Rias that he ran his idea by "three of the smartest people in the universe, and Azazel".
  • My God, What Have I Done?: Oakley has one of these moments. She was fine during the battle, while helping Harry fix Mulan, and during the debriefing. But once she his a moment to decompress, she starts thinking about how she killed Remus. Shizukesa expressing relief at being able to cut loose without hurting anyone sends Oakley over the edge.
  • My Sister Is Off-Limits!: Jeanne doesn't want her little sister Alice to join the Hero Faction despite her being the reincarnation of the Greek heroine Atalante, both because she doesn't want to turn her sister into a soldier but also because Hercules has "expressed an interest" in her (even more creepy than usual as Alice is barely into puberty at this point).
  • Nerds Are Sexy: Played with, Reya is originally drawn to Harry because he shares her love of books.
  • Nice Job Breaking It, Hero!: Rossweisse reveals that Harry's suggestion that Jeanne getting the Hero Brigade to try and pick a fight with Trihexa is a thousand times worse than their original plan of fighting Great Red, because not only is Trihexa such a massive threat that his original defeat during the War Of Forgotten eons ago was made at the cost of the near-destruction of the world, the death of 90% of humanity, hundreds of thousands of devils and other immortals, and dozens of gods! It also led to the death of a weakened Jehovah in the subsequent war with Lucifer. On top of that, the seals keeping him locked up are already damaged, and only number at about 6, and not thousands like Harry believed. To be fair, others on the Chaos Brigade were already plotting to release Trihexa before he suggested this, so the Hero Faction probably isn't going to do anything there, and at least there'll be strong warriors there when the seal is broken.
  • No Biological Sex: The Beholders, though Shizukesa and the other Deltas always had gender identities.
  • Nominal Importance:
    • None of the Hero mooks in A Violent Introduction? are given names. However one of them was given a name in the previous arc. Guess which one gets captured and interrogated by Harry and company?
    • The Beholders don't have names, they have designations consisting of a Greek letter and a number. Harry nicknames one (BB, short for "Boss Beholder") who is Final Boss for the Beholder Arc. Serafall nicknames another one (Rini), who is the only Beholder sent to Japan who survive. Rini also gets recruited by Serafall to be her Knight.
  • Normal Fish in a Tiny Pond: Harry in his own world, despite his accomplishments and stuff like the Winter Mantle, is still nowhere near his prime as a wizard yet. In "Bizarro World", however, his style of magic is apparently entirely unique, as is his use of Winter, Hellfire, and Soulfire. In addition to coming up with a way to protect Devils against Light, simply by doing what he usually does to his protection spells when he finds some new force trying to kill him, and his breakthroughs with calculated spells, he's managed to gain the personal attention of the leaders of the Three Factions, and even their respect, and survive fights with things outside his weight class.
    • Rossweisse even says that he might be the strongest human that doesn't have a (natural) Sacred Gear in the The War of Forgotten?.
  • Not a Date:
    • Issei keeps insisting that the various outings Rias takes him on aren't dates, still too hurt from his experience with Raynare to think that anyone is romantically interested in him. Harry finally tells Rias that her subtle game isn't working, and that she needs to simply sit Issei down and confess her feelings directly to him. She does offscreen, alongside Akeno, Koneko and Asia, leading to Issei officially dating his harem.
    • Harry briefly tries to justify his day out with Tsubasa as just him keeping an eye on her, but quickly caves in and admits to himself that yes, it is an official date.
  • Not So Stoic: Cao Cao gasps and gets briefly unnerved for the first time when Harry demonstrates 2nd Amendment on the anti-monsters, likely remembering how Harry had pulled it on him.
  • The Nudifier:
    • Harry subs for Momo in the Ratings Game against Riser and his peerage, and when cornered, pretends that he knows how to perform Issei's iconic Dress Break. He doesn't (he finds the technique extremely skeevy), but uses an illusion that distracts his female opponents long enough for Tsubasa to take most of them down.
    • The real thing makes it's debut in A Violent Introduction? during the fight against the Hero Faction in Kyoto. Issei uses it on a group of female fighters, which makes most of them run away. Unlike canon Jeanne also gets hit, as does OC Oakley. Both of them try to keep fighting, but ultimately cannot (Oakley because one of her fleeing comrades accidentally knock her out with her own rifle, and Jeanne because she got embarrassed when she saw that Harry was watching her fight in the nude).
  • Oblivious to Love: Azazel is completely unaware of DxD!Lasciel's attraction to him.
    • Earlier, Harry lampshades Saji being this to the two Peerage-Mates of his that are pursuing him, even after the Halloween Party incident mentioned below, even dropping the trope name. Saji claims that he doesn't remember the incident, but Harry thinks he might be lying because he still holds a torch for Sona.
    • While Issei became aware of Rias, Asia, Akeno, and Koneko's feelings after Harry told Rias to stop with the Not a Date stuff and just confess directly, he was still initially unaware that Xenovia and Irina were interested in anything more than having a Heavenly Dragon's baby, despite his own feelings for at least the latter. Harry notes that this makes sense, as he's still not fully over Raynare's betrayal, even if he is healing.
    • Harry warns Oakley that her crush Tomoe might well be this.
  • Omake: There have been five Omake chapters so far; the April Fools' chapter (which was removed due to negative fan backlash), the Halloween Party (which is now canon), Harry's Christmas with the girls, a tribute to Carrie Fisher, and a thread from the Miracle Levi-tan forum arguing over whether the Wandering Wizard and Levi-tan are dating.
  • One Steve Limit:
    • Played with, with Tsubasa and Tsubaki. Serafall decides she can't use 'Tsuba' as Tsubasa's nickname, because that could refer to either of them.
    • Also played with Bob the Skull from Dresden Files; who is not an active character (being trapped in another universe) but is still occasionally mentioned, and Bob the tengu kunoichi, who is a secondary character and does not have a major impact on the story.
  • Overprotective Dad: Mr. Yura isn't crazy about his daughter going on a date with Harry (Harry being a self-proclaimed wizard doesn't help since Mr. Yura isn't aware of his daughter being part of the supernatural), and Tsubasa mentions he put her in an all-girls school for this exact reason.
  • Painting the Medium: The Beholders' disturbing and inhuman voices is original written with every vowel as a capital letter, and consonants as lower case. This stops after Harry asks Lash to filter their speech.
  • A Party, Also Known as an Orgy: The party in the Halloween Omake almost becomes one of these due to two different guests spiking the punch, not knowing about the others. The resulting mix ends up accidentally becoming an aphrodisiac and nearly leads to the various love interests consummating their relationships in Harry's living room (Akeno didn't have any, but that didn't stop her). Only Harry just barely managing to cast a sobering-up spell (while very close to being drawn into an orgy with his sort-of girlfriends) stops it. Sirzechs and Grayfia had already adjourned to his guest bedroom though...
  • Playing with Fire: Tsubasa manages to use something similar to Fuego when fighting Herc.
  • Post-Kiss Catatonia: Harry's kiss causes Reya to pass out and collapse. Then he kisses Tsubasa, and she does the frozen in place version of this trope. Which was good for Harry, since one of his legs was disabled and he was barely standing, so he uses her for support.
  • Powers via Possession: The Akiba thief uses a ghostly possession to perpetrate her crimes; specifically invisibility to avoid detection, and intangibility to gain entry.
  • Properly Paranoid: Harry's paranoia usually pays off.
  • Punctuated! For! Emphasis!: Done by Serafall when playing bad cop in A Working Date?
    Serafall: Give. Us. The. Website!
  • Punny Name: Azazel names an artificial Sacred Gear that can turn into any gun the user can accurately picture "2nd Amendment".
  • Redemption Equals Death: Oakley dies in a Heroic Sacrifice after her Mook–Face Turn. She gets better.
  • Refuge in Audacity:
    • In a Working Date?, Harry and Serafall demand to check a tournament player's Pokemon deck (while in Sword Art Online cosplay) by claiming to work for Nintendo, and masking the spell that reveals counterfeits with a flashlight with a bit of colored cellophane over it.
    • How Harry gets rid of Cao Cao at the end of the Alice White arc. He basically says, "I just split this girl's soul into Normal and Hero halves and destroyed the Hero part. Now get out of here before I make you kill me so Serafall and Azazel have an opening and a reason to kill you". Cao Cao complies. The first part is even a lie; that was Harry' plan but it didn't work so he found a way to trick Cao Cao into believing it worked.
  • Revenge: Jeanne joined the Hero Faction because a high Class Devil entered a bar owned by a Fallen, and the place caught fire as a result, her father dying when he went in to save others. She's already killed the Devil, and Harry gives her the info to track down the Fallen.
    • Remus has a grudge against Nike, deliberately passing on a chance to attack their draconic target and joining in the attack on Kyoto in the hopes of fighting her, blaming her for not favoring his original incarnation, despite Nike having had no part in that incident.
  • Revenge Before Reason: Mulan of the Hero Faction wants revenge on Japan for the actions taken against China during WWII. As Oakley points out, besides the obvious problem that nearly everyone in Japan (and Kyoto, which she is helping attack) who was involved is dead, and that her parents weren't even alive then, let alone her, Mulan is Chinese-Canadian, and asks why she's speaking the language if she hates Japan so much, and points out that for someone who hates Japan, she sure watches a lot of anime... This is later confirmed to be Longinus brainwashing, and she accepts protective custody after the battle is over.
  • Running Gag: Harry cursing their teenage hormones whenever they make him feel excited.
  • Savage Wolves: Some show up right after Harry chases off the wyvern. They're the children of Fenrir and Hela.
  • Semi-Divine: Jeanne reveals that the Hero Faction's Heracles is the fifth generation descendentnote  of the real Heracles, after Zeus raised him to full godhood. That explains why he is stronger and tougher than a Human has any right to be, since his Sacred Gear just makes explosions.
  • Sense Freak: Shizukesa is so happy to have a humanoid body in part because, besides eyesight (obviously) and a little bit hearing, her senses were not that good as a Beholder. Her sense of touch was almost non-existent, being just pressure, temperature was either too hot, acceptable, or too cold, and she had no sense of smell at all. She's particularly fond of taste, apparently tasting chocolate for the first time made her finally understand why Harry Potter said that it's a cure for nearly getting your soul sucked out.
  • Shameless Fanservice Girl: Leviathan, even by the standards of Devils, is completely shameless and combines this trope with her obsession with Magical Girl fiction. One notable incident is when she magically transforms out of her uniform... except HER transformation does not have any censorship sparkles, giving every member of Sona and Rias peerages a Full-Frontal Assault (as well as Harry). Ironically, despite her unrestrained nature, she's never actually been involved with anyone before Harry, her political role having made that impossible.
  • Shaping Your Attacks: Done by Harry to show off what being a Wizard (versus a D x D Magician) is to Goth Hermione. He fires three Pyro Fuegos at her in a row. The first is a two-toned beam of fire. The second is a giant dragon's claw of flames. And the third is a descending cloud of fire.
  • She Is Not My Girlfriend: Harry wants to invoke this trope in A Working Date?, but does not because he know it will just get him in trouble. To the readers, it's pretty clear that at this point it's just a matter of semantics.
  • She's Got Legs: While Sona isn't as voluptuous as her peerage, her physical appeal lies more in this trope, something Harry even remarks upon on their date, pointing out that Sona clearly picked an outfit that shows off her legs.
  • Shipper on Deck: Like in the original series, we have Lash, but she has been joined by Azazel who is aware of Harry's feelings due to their Soul Gaze, and enthusiastically both encourages Harry to pursue the girls, and prods him for info about his romantic life. Much to Harry's chagrin, since he doesn't consider his relationships to be anyone else's business.
    • He and Lash, upon realizing that the DxD version of Lasciel, Azazel's assistant, has a crush on him, start plotting on how to get them together.
  • Shout-Out:
    Harry/Shirou: "What part of it resembles either a bug or a bear?'
  • Shutting Up Now: When Issei notes that Ddraig isn't going to be happy thst they're collecting dragon body parts, Harry notes that the dragon should have thought of that before he attacked and killed the students of the magical college they were investigating the ruins of. This is apparently his response.
  • Sibling Triangle: Sona X Harry X Serafall is a type 11 or type 13 Triang Relations, depending on whether or not you buy Harry's reluctance. Both girls like Harry, Serafall seems to have a more than sisterly affection for Sona, and Harry likes both girls, but has issues. Unlike most Sibling Triangles, there is a good chance this one will not require one of the siblings to be dumped...
  • Sneeze Cut: Happens to Azazel in A Storm Gathering?; Harry mentions learning about Sacred Gears from "a certain otaku Fallen". Cut to Az sneezing and Serafall offering him a hanky.
  • Spooky Photographs: A fanboy taking a picture of Harry and Serafall in costume gets more than he bargained for when the dark, incomplete form of Lash shows up as well.
  • Squick: In-Universe. Harry refers to Fenrir and Hela's biological children as the "Trifecta of Squick," given how their existence implies Villainous Incest, Bestiality Is Depraved and I Love the Dead occurring all at once.
  • The Stations of the Canon: Despite the other differences with canon Volume 9, Ise still takes a parting shot at the retreating Cao Cao, with help from Sun Wukong, and still destroys Cao Cao's right eye. Presumably for the eventual rewrite of Volumes 11 and 12.
  • Statuesque Stunner: Besides the canon ones (Rias, Rossweisse and Tsubaki), there's Behemoth, who is certainly as tall as Harry.
  • Straight Gay: Oakley. Harry only noticed because he saw her looking at Tomoe's butt.
  • Subordinate Excuse: DxD!Lasciel works as Azazel's assistant because she has a crush on him. She even fell because of it (along with Wrath towards Raynare for managing to seduce him once).
  • Suicide By Dragon: The Delta-2 Beholder did this in guilt after killing their evil sibling with Delta-5.
  • Taking You with Me: After being ambushed by BB and racking up some nasty injuries, Harry prepares to take punish BB with his death curse (by blinding the Beholder). Luckily, Serafall shows up in time to make this unnecessary.
  • That Man Is Dead: Due to her time with Harry, along with her attraction towards Azazel, Lash no longer considers herself a shade of Laciel, but her own entity.
  • Those Two Guys:
    • Like in DxD canon, there's Matsuda and Motohama, Issei's perverted friends. In this fic, they constantly pester Harry for magical aid in peeping on their female classmates. Harry goes out of his way to sabotage their efforts.
    • Since Issei's more focused on his harem, and not leching after random girls at the school, he's not counted among the Trio anymore, leaving it a Perverted Duo (though Katase suggests adding Aika in with them to keep the name, to which all three protest in stereo).
  • Throw-Away Guns: Played with, with 2nd Amendment. Harry generally discards it when it runs out of bullets. But this is just because it is the most efficient way to revert it to its standby state; which allows him to summon it again, fully loaded.
  • Throwing Your Axe Always Works: Remus can do this because his weapon is literally bloodthirsty and won't stop until it strikes a foe.
  • Token Good Teammate: Jeanne is the most sympathetic of the Hero faction shown so far (possibly aside from Oakley). Georg, Siegfried and Cao Cao are all Knight Templar, Leonardo has received little to no characterization yet, and Heracles is a huge Jerk Ass who'd be a Nominal Hero if they were the protagonists.
  • Torso with a View: Harry gets a hole straight through his right thigh, front to back. Including, in his own words, a femur ground into powder. He covers his leg in a layer of ice to help him stand and so the thin flaps of skin and muscle still holding the limb on don't tear.
  • Trademark Favorite Food: While Harry is far from a picky eater, he has a notable preference for burgers, especially Burger King.
  • Transformation Sequence: Serafall does one in reverse. Except being live, she does not have the benefit of the editing department over painting her skin with magical sparkles. As a result she flashes all of Sona and Rias's Peerages, and Harry.
  • Transgender: Shizukesa counts, since her original form had No Biological Sex despite her having a gender identity.
  • Translator Microbes: There's a spell that allows the affected individuals to both speak and read/write in a chosen language, but causes the loss of their original language, even if they have Language. Sona and Reya tried it on themselves, but it went past the expected duration and they couldn't read the spellbook to figure out what went wrong.
  • Troll: After the battle in Kyoto, Sun Wukong deliberately returns the gang to the real world... with a bunch of tourists surrounding their reentry point
  • Truth in Television: It turns out that having an actual theater at home where rich and well-connected people can watch movies on the release day like Sona does is a real thing. It's called the Bel Air Circuit and it costs around $100k to join and a $4k/month membership.
  • Twerp Sweating: Tsubasa's dad to Harry. Even though Harry is roughly the same age (chronologically) and has two daughters of his own. Harry is still intimidated, admitting that he knows what he would do for his own girls.
  • Uncatty Resemblance: Shizukesa's familiar, a bugbear named William, is, like her former appearance, a creature with a body dominated by a single eye.
  • Unwitting Pawn: Harry suspects that either Ophis or someone who has her ear in the Chaos Brigade is either working for or with the Outsiders.
  • Verbal Backspace: Harry jumps up "getting ready to turn whatever had alarmed my girls in a block of ice. The girls. 'The', not 'my'." He does this on occasion in the early parts of the story, referring to Sona/Reya/Tsubasa in the possessive, and then quickly switching to a more neutral term.
  • Vicariously Ambitious: Knowing that she can't do anything about her crush on Azazel, Lash decides to help the DxD version of Lasciel get his attention.
  • Villainous Incest: Fenrir and Hela have kids. Harry and Reya are both grossed out when they realize this.
  • Villains Out Shopping: After the Ratings Game, Riser's peerage remain in the city to have a night out. Unfortunately, one of Argus Beholders catches Mihae by surprise and costs her an eye (temporarily).
  • Violently Protective Girlfriend: While Harry is far from helpless, he's a good deal more breakable than his harem, who have come to his rescue several times already when he's been about to be overwhelmed, most notably during the Beholder story. On a more humorous note, they're also a bit of the jealous type and tend to get pissed when other girls flirt with Harry.
  • Virginity Makes You Stupid: Riser references this trope when Harry and Sona walk into his trap. Harry quickly points out that they were ready for the trap; but he is also not a virgin (ironically making him the only confirmed non-virgin on the hero side. Riser and his peerage are most certainly not virgins, but vastly underestimate both Sona and her peerage, and Harry).
  • We Have Ways of Making You Talk: Harry uses a fairly creative variant of this mixed with Bad Guys Do the Dirty Work with a suspect who refused to give them his intel on the Loki faction because The Mob Boss Is Scarier. The wizard simply lets him go while noting that while the two of them know he didn't fess up a thing, the Loki faction isn't likely to buy it just like that, making them bound to track the suspect down and torture him in other to find out what exactly he allegedly told Harry about them.
  • Weirdness Censor: Unlike Harry's original world, DxD's Japan, while it does ostensibly have a Masquerade, has supernatural beings appear in public a lot more often with no real consequence, and several Muggles are aware of the supernatural without really being part of it (the Devils at Kuoh actually use summoning flyers). Probably helped by the fact that Japan's spiritual culture is a lot more interconnected with society than the secular west.
  • Weirdness Magnet: Azazel calls out Harry and Issei on being this, saying that they're the worst trouble magnets he's seen in a thousand years, and with them on the Kyoto trip, things going wrong is a matter of when, not if. He's right.
  • What Kind of Lame Power Is Heart, Anyway?: Oakley isn't exactly happy about her Living Lie Detector powers at first. Being made aware of the truth behind The Masquerade early on certainly didn't help that opinion.
  • What the Hell, Hero?: Harry's girlfriends are not the least bit impressed that he put himself in needless danger by leaving the protection of his house and attracting the attention of BB, especially since it's clear to everyone, including the readers, that he didn't really need to run his errands, and just wanted an excuse to leave the house, and he himself admits he should have at least gotten someone to go with him.
    • Harry calls Oakley out when she says that the Hero Faction is working for the "good of humanity".
  • Who Names Their Kid "Dude"?: Bob the (female) Tengu resents her parents for naming her after Bob Dylan. Takako also dislikes being reminded that her name basically means "Hawk girl".
  • Worthy Opponent: In a light-hearted way, Koneko sees Mister as one after he refuses to submit to her authority (Nekomatas by nature make felines bow to them).
  • You Are Number 6: Done twice for the Beholders. They do not have names, they are given a designation consisting of a number and a Greek letter. The number is the order of their creation, while the letter is their sub-species, also assigned in the order it was created.
  • You Have Failed Me: Argus forces the Delta Beholders to pair off and fight to the death for questioning his orders. After he compelled them follow said orders anyway.
  • You Killed My Father: The reason Jeanne ended up with the Hero Faction is that her father died saving two others from a bar fire (he worked as a chef there) caused when a Devil entered and took offense to the Fallen owner. She already killed the Devil, and Harry gives her info on the Fallen after the mess with Alice. Whether or not she acted on it is left deliberately ambiguous.

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