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Fanfic / Hero Academia DD

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Hero Academia D×D is a Fusion Fic of My Hero Academia/High School D×D, with a little Bungo Stray Dogs and others thrown in, where the people with Quirks unknowingly live next to angels, fallen angels, devils and people with Sacred Gears.

In a world where 80% of the population has a superpower called a Quirk, Midoriya Izuku has always wanted to become a Hero, a superpowered crimefighter who could save people with a smile and bring them hope in their time of need. No amount of bullying or scorn was ever going to beat that out of him.


The only problem? He’s Quirkless.

Then he meets a young woman who says she can help. And Izuku, against his better judgment, agrees… And gets killed. Fortunately, he’s later revived by the beautiful Rias Gremory, who just happens to be a General Studies Student at U.A. High.

Now a devil servant for Rias, Izuku must now deal with villains from both the human and supernatural worlds, while learning how to be a Hero, gaining a harem by accident along the way. He’s not going to be able to handle the last one very well.

Fan Fiction Dot Net link.


Hero Academia D×D provides examples of:

  • Accidental Pervert: Izuku really, really didn't intend to check out Koneko and Ochako after their clothes get partially destroyed in the Rating Game.
  • Adaptation Relationship Overhaul: Izuku never has the chance to meet All Might, instead getting his powers due to his draconic inheritance, his Sacred Gear and his reincarnation as a devil. So, when they meet, he's just a star-struck fan.
  • Adaptational Badass: The characters tend to be more badass than their counterparts in both canons.
    • Izuku now has super strength, can fly and fire long-range attacks without breaking himself like his canon self.
    • Ibara improves from Asia in being able to use her vines to fight and learning defensive spells.
    • Momo, even before becoming a devil, can throw lightning around and use that to control magnetic fields.
    • Ochako gets magical powers to complement her Quirk, as well as the powers of a Rook.
  • Adaptational Superpower Change:
    • Izuku, instead of One for All, has the Boosted Gear and, as the descendant of a dragon, can partially transform into one.
    • Ibara, apart from her vines, also has the ability to heal people thanks to Twilight Healing.
    • Momo can also control lightning, which she can use to control magnetic fields.
    • Ochako is a witch and learns how to use magic in combination with her Gravity Master Quirk.
    • Kiba has a Quirk that allows him to change his gravitational orientation, but only when walking on a surface (like a wall).
  • Adapted Out:
  • Age Lift: Rias and the other D×D characters are all a bit younger than in canon. For example, in canon, she was a third-year while Issei was a second-year when she reincarnated him. Here, she's a first-year high school student while Izuku is a third-year middle school student when she reincarnates him.
  • Bi the Way: Momo is in a relationship with Kyoka, but has the hots for Izuku. Kyoka is also going to end up joining the harem as well.
  • Clueless Chick Magnet: Izuku (much to his astonishment) is attracting pretty girls like honey attracts flies. As of Chapter 19, no less than ten girls have clear crushes (or more) on him, and he's bound to get even more attention as time passes. Ddraig tells him it's because he's more attractive than other males due to both the Boosted Gear and being part dragon.
  • Composite Character: Several main characters are fused as part of the story.
    • The main character is Izuku with Issei's Boosted Gear, part of his backstory (becoming a devil after Raynare kills him) and penchant to somehow have all sorts of girls want to jump his bones.
    • Ibara takes Asia's Twilight Healing, backstory (a Catholic girl who, due to Twilight Healing, became a saint of sorts only to be excommunicated because she healed a devil) and hero-worship of the main character.
    • Momo gets Akeno's lightning, BDSM tendencies, and backstory as the daughter of a Fallen Angel she is estranged with.
  • Curb-Stomp Battle: The Rating Game versus Riser Phenex and his Peerage. Thanks to their strategy, their powers and being underestimated, Rias' Peerage manages to destroy their rivals, with the only loss being Ibara when she takes a fire attack for Rias.
  • Eating the Eye Candy: Ibara, Ochako, and Rias are almost drooling at the sight of post-Training from Hell Izuku.
  • Epic Fail:
    • When Ile and Nel (the chainsaw-wielding twins in Riser's Peerage) attack Izuku, their first strike ends up hitting the concrete walls: their chainsaws break and they hit themselves in the head. Their teammates can barely believe it.
    • Ibara's first (and only) attempt to help with the cooking ended with her burning the eggs and the juice (somehow).
  • First Kiss: Between Izuku and Rias in Chapter 18.
  • Foreshadowing: In Chapter 7, when getting their familiars, the Familiar Master initially offered Izuku as a potential dragon familiar. Come Chapter 16 and it's revealed that Izuku has dragon heritage.
  • For Want of a Nail: Due to having the Boosted Gear, Izuku scores first place in the U.A. Entrance Exam, while Bakugo only takes 5th place. Conversely, as Izuku didn't need help landing after taking out the Zero-Pointer, Ochako scores lower than in canon, taking 10th place.
  • Gambit Pileup: Izuku's plan to deal with Riser is this. First, he uses Flame Delete to nullify Riser's fire. Then, when he gets close, he can attack with the sword to seriously hurt him, since the regenerative flames die. When Riser tries to choke him and throw him off, he can easily grab him and bring him down as well. And when Riser threatens to kill him in order to force Rias to surrender, it turns out he was actually planning for it, waiting until he was close enough to get Ibara's holy water out, Boost it and break the bottle on Riser, seriously incapacitating him and leaving him easy prey for Izuku's final attack.
  • Heroic BSoD: Played for Laughs after Rias kisses Izuku. That night, Ddraig's attempts to call his attention are fruitless because Izuku's mind is broken over the kiss. As the story puts it, "It appears that an error has occurred with MidoriyaIzuku.EXE."
  • Hypocrite: Riser calls Izuku a selfish brat for interfering in the arranged marriage between him and Rias - when he's only trying to force the wedding through to stroke his ego and turn Rias into his Trophy Wife and her Peerage into his slaves, normal (Kiba and Izuku) or otherwise (Koneko, Ibara, Momo and Ochako).
  • Innocent Cohabitation: Ibara, Ochako, and Rias end up living with the Midoriyas for diverse motives. Of course, the three girls would really prefer it to be less innocent.
  • Kansas City Shuffle: One of the traps Yuuto sets up during the Rating Game is to get Riser's pawns to trigger one they can easily avert so they drop their guard and then trigger another that leaves them completely defenseless.
  • Laxative Prank: When Riser visits Rias as part of his attempt to force her to marry him, Momo slips into his cup of tea enough laxatives to last him for two days. They begin to take effect just before he leaves.
  • Luminescent Blush: This being Izuku, mixed in with the world of buxom beauties that is High School D×D, the result is the poor kid spending more time with a red face than not.
  • Marshmallow Hell: After their first day at U.A., Rias decides to demonstrate how close she and Izuku are by burying his head into her bosom.
  • Massive Multiplayer Crossover: One of the tags of the story reads "My Hero Academia and High School DxD are the main series". Sure enough, while the plot follows the canons of My Hero Academia and High School D×D, characters from Bungo Stray Dogs, Under Night In-Birth, BlazBlue and other series appear occasionally.
  • Megaton Punch: Izuku's finisher move, Dragon Smash. He uses it against Riser to end him during the Rating Game.
  • Mythology Gag:
    • Koneko calls Ravel "fried chicken".
    • Riser is defeated when the main character drenches him in Boosted holy water and gives him a Megaton Punch with a hand holding a cross.
    • Yura Tsubasa stating she likes boys unafraid of getting dirty.
    • Rias' father originally wanted her to go to Kuoh Academy, which is where she and Sona studied in canon.
  • Oblivious to Love: Izuku is the only one in his middle school class that cannot tell that Milia Takamaki is nursing a big crush on him.
  • Oh, Crap!:
    • Izuku when he notices the many Death Glares he's getting from his male middle school classmates as Rias Gremory escorts him to the school.
    • Ibara and Izuku when Dazai and Kunikida reveal they are investigating the murder scene they were at.
  • Orwellian Retcon: The Author's recently gone back and changed a few details in the story.
  • Polyamory: What the story aims for, with Izuku in the middle of a group of MANY girls that want him. As of Chapter 20, the official list includes:
    • From High School D×D: Rias Gremory (main girl), Toujou Koneko, Ravel Phenex, Yura Tsubasa, Xenovia Quarta, Shidou Irina, Rossweisse and Le Fay Pendragon.
    • From My Hero Academia: Shiozaki Ibara, Uraraka Ochako, Yaoyorozu Momo, Jiro Kyoka, Asui Tsuyu, Kendo Itsuka, Ashido Mina, Tokage Setsuna, Melissa Shield, Hatsume Mei, and Hadou Nejire.
    • Original Characters: Milia Takamaki and Liana Kozuki.
  • Retcon: Originally, Momo had One For All. But, per Word of God feeling Momo wouldn't need it, someone else has been given One For All instead.
  • Saying Too Much: When Izuku, Ibara, Kyoka, Momo, and Ochako meet Dazai and Kunikida and they mention last night's murder, Ibara accidentally reveals she and Izuku were there when she mentions the priest that carried out the murder - a detail the detectives had not mentioned to the teens.
  • Shout-Out:
  • Spanner in the Works: Ibara sneaking a vial of holy water and a cross into the Rating Game proves vital for Izuku's plan to defeat Riser by exploiting devil's weaknesses to cause him to lose his regenerative power.
  • Spared by the Adaptation: Rias, after asking for Izuku and Ibara's opinion, spares Raynare here. She then joins up with the Port Mafia.
  • Supreme Chef: Rias, much like in canon.
  • Taking the Bullet: Ibara has done this twice already in the story: the first to save Izuku from being impaled by one of Raynare's light spears and the second to protect Rias from Riser's attack.
  • The Tease: Rias loves to tease Izuku, because she likes his reactions to it and because she likes him. Momo starts to get in on this also.
  • Training from Hell: To prepare for the Rating Game, Mizu calls in a favor from Tannin, the Devil Dragon, who takes Izuku to another dimension where Izuku essentially suffers through one month of torture to become a stronger fighter.
  • Underestimating Badassery: Riser makes the mistake of thinking Rias' Peerage will be unable to defeat him, being particularly insulting towards Izuku. During the Rating Game, Izuku takes advantage of this to destroy Riser in a fight.
  • Year Inside, Hour Outside: The dimension Tannin trains Izuku in is stated to go one hour outside-one month inside.

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