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Fanfic / Flag Flying High

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Wei Wuxian and Harry note 

Flag Flying High is a Harry Potter and Grandmaster of Demonic Cultivation: Mo Dao Zu Shi crossover fic written by Araceil on Archive of Our Own.

Wei Wuxian wakes up to a new body, with a command assigned to him: whatever he will do the Mo clan in revenge for the body's former tenant, he needs to protect Hari — the only person who ever cared for Mo Xuanyu — above all. The child is not to be harmed.

Unfortunately, said child is cursed to draw the undead to him, and Wei Wuxian ultimately accepts to leave him at Clouds Recesses in order to find a solution to the problem. At least Hari won't be able to raise havoc there.



Contains the following tropes:

  • Abhorrent Admirer: Harry unfortunately attracts two of them. If Mo Xuanyu quickly understands how wrong it was for him to lust after the teen, Nie Libo refuses to hear the memo.
  • Accidental Truth: Lan Jingyi believes that red, black and gold are Harry's clan colours. Since Wei Wuxian claimed him as his adoptive son, it would be.
  • Affectionate Gesture to the Head: Wei Wuxian really enjoys petting Harry's fluffy hair. Lan Wanji also pats the teen on the head after hearing how protective Harry is towards "Mo Xuanyu".
  • Affectionate Nickname: Harry is often called A-Li, and later gains Lili after babysitting the very young disciples.
  • Alchemy Is Magic: Downplayed as the cultivation world knows alchemy. However, the brand that Harry uses allows him to do things that cultivators couldn't even imagine.
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  • Ambiguous Disorder: Neither Harry nor the cultivators have a sufficient knowledge of mental health to correctly divine what was wrong with Mo Xuanyu — he apparently suffered from extreme mood swings, struggled with lapses of forgetfulness and was liable to self-harm.
  • Aristocrats Are Evil: Harry's experiences in Britain with the so called 'Sacred Twenty Eight' left him rather bitter and disillusioned toward nobles, despite himself being one due to James and his paternal grandmother, Dorea Black. The disgusting behaviour of the Mo family and that of Jiang Cheng seems to only have reinforced his disdain for nobles.
  • Beauty Is Never Tarnished: Once the Yi City debacle is over Harry notices that Lan Wangji looks irritatingly pristine and elegantly sexy despite fighting a horde of living dead, a demonic cultivator and being drenched by the rain that Harry summoned. Harry himself looks and feels an utter mess and does not appreciate the contrast.
  • Because You Were Nice to Me: Mo Xuanyu gets extremely attached to Harry, who's the literally the only person kind to him to point of falling in love with him. After being manipulated and ostracized by his paternal family and abused and neglected by his maternal family, Harry's care and kindness is a literal lifeline. Deconstructed as Mo Xuanyu's extreme attachment is a side effect of his terrible life and deteriorating mental health.
  • Beware the Nice Ones: Wei Wuxian, he is one of the kindest souls but he does not hesitate to Neck Snap an abusive servant for injuring Harry.
    • Harry is also an example.
  • Blue Blood: The Lans are a very distinguished family. Harry himself is descended from at least two Ancient and Noble families, Potter and Black.
  • Brought Down to Normal: Following his resurrection at Hogwarts' Battle, Harry completely lost his magic. He came to the cultivation world in order to find a potential way to regain it.
  • Bunnies for Cuteness: There's a whole warren of cute little rabbits at Cloud Recesses, and everyone just loves to cuddle them. Also, Wei Wuxian compares Harry's hair to rabbit fur when gushing over it.
  • The Caretaker: Deconstructed with Harry, who genuinely did his best to help Mo Xuanyu with his mental illness and abusive home life but couldn't help feeling resentful, tired and disgusted at some points.
  • Casual Kink: Harry asks Lan Wangji if he has anything to secure a prisoner. Lan Wangji presents him with red corded silk rope. Harry is less than amused.
  • Curb-Stomp Battle: Maiden Nie Libo easily manhandles Harry who's not physically trained and is recovering from a broken arm, while she's very strong in Yang energy.
  • Cuteness Proximity: Harry melts over Lan Wangji's bunnies and over the Lan toddlers he babysits.
  • Defusing the Tyke-Bomb: Harry has made it his mission to improve Jin Ling's general brattiness.
  • Deliberate Values Dissonance: Well, yes, since it's about a 20th century English teen stuck into an Imperial China setting.
    • Harry's short hair makes people believe he's a criminal or had a falling-out with his parents. After learning this, the teen decides to grow his curls out to better fit in and declare he's honouring his family.
    • Lan Wangji isn't intimidated by a shovel talk, instead taking it as a demonstration of filial piety from Harry.
    • Marry for Love is treated as a baffling incongruity, and it's extremely common to arrange weddings. Since having children basically is a social tenet, homosexuality and infertility are seen as unattractive and ground for discrimination.
    • Lan Yuan is rather flustered when Harry describes his former House Gryffindor's blazonry since red and gold are bridal colours in the Eastern, only for the Outlander boy to show him a picture of his mother's wedding wearing robes very reminiscient of the Lan clothes.
    • Education being extremely costly for a cultivator, they're left in awe by the English schooling system. From their viewpoint, a high-school dropout such as Harry is way past overeducated.
  • Doting Parent: Wei Wuxian adores cuddling Harry and loudly praising how much he's a good son. Harry feels a mite embarrassed over it.
  • Double Standard: Rape, Female on Male: Violently averted when Nie Libo almost assaults Harry. It's made extremely clear that her behaviour is not tolerated on Cloud Recesses.
  • Dramatic Irony: Harry is pleased to see "Mo Xuanyu" on the road to sanity recovery but still frets about a possible setback. It's painful to read this since the reader already is aware that Mo Xuanyu did the irreversible and will never be able to get better.
  • Driven to Suicide: Mo Xuanyu's last demonic ritual has strong vibes of this, mainly implied by his utter horror for his own inappropriate lust towards his precious A-Li.
  • Entertainingly Wrong: Xue Yang is under the impression that Harry is the biological son of the Yiling Patriarch, sired during the three months he was missing during the Sunshot Campaign.
  • Everyone Can See It: Lan Sizhui's embarrassing crush for Harry is so obvious that the junior disciples decided to have pity on the poor guy and push them together.
  • Everyone Has Standards:
    • The Lan party present at the Mo village is stunned and repulsed by the family's treatment of their mentally unstable nephew and said nephew's caretaker.
    • For all his mental illness, Mo Xuanyu was disgusted to learn he was lusting after a minor and is strongly implied to have been Driven to Suicide as his atonement.
    • Wei Wuxian is rather freaked by the ritual that brought him back into a new body and completely stricken with horror when Harry explains him the nature of his curse, musing that he never dragged his opponents' demise but always killed them quickly. Lan Qihua also concedes that no matter his reputation, the Yiling Patriarch would have never indulged into stealing and consuming a living person's chi.
    • Harry treats Jin Ling as a Spoiled Brat in dire need of a huge spanking and reality check, but when the younger boy begs him to not let him come home out of fear of his uncle's fearsome temper, Harry accepts to keep the Jin scion with his party.
  • Extremely Protective Child: Harry shows a lot of vehemence when it comes to Mo Xuanyu's wellbeing. It gains him the approval of cultivators, as he's basically demonstrating filial piety towards someone unable to pay him back.
  • Fairytale Wedding Dress: One of Lily Potter's pictures shows her wearing one of these — it apparently included unicorn hair for ensuring blessings.
  • Fascinating Eyebrow: When Lan Wangji exposes his Casual Kink for bondage Harry's only response is to give him a blank stare and raise an eyebrow.
  • Foil:
    • Rather unexpectedly so, Mo Xuanyu is one to Lily Potter — both of them are currently dead but still influence the plot by virtue of sacrificing their own lives to ensure Harry's protection. Of course, Mo Xuanyu's way is rather more active than not.
    • Mo Xuanyu also is one to Nie Libo, both of them growing a rather creepy attraction towards Harry. However, he was able to realize what he did was wrong, while she ultimately becomes a sexual predator.
    • Nie Libo and Lan Sizhui are attracted to Harry. Where she's a case of Weakness Turns Her On and so agressive she ultimately turns into a sexual predator, he thinks Power Is Sexy and his gentleness has him promoted to the rank of boyfriend.
    • Harry and Jin Ling are both orphans raised by their mothers sibling. Harry's aunt saw him as an unwanted burden, never cared and resented him. Jiang Cheng for all his faults dearly loves his nephew and fought to be able to raise him. Harry notices the similarities and is aware that had he been raised by Sirius he would be a spoiled little prince like Jin Ling.
  • Foreshadowing: Harry's last letter from home informed that Draco Malfoy was tearing up all over the place trying to find Harry.
  • Freudian Excuse:
    • Nie Libo has been raised by a very traditional-minded aunt that made her feel No Guy Wants an Amazon, putting her at odds with the Qinghe Nie clan and making her desperate to find anyone who would take her for a wife. She wants so badly to believe that marrying Harry will solve her problems, only to come on him too strongly and scaring him away.
    • Yao Yuanxun is hinted to sympathize with Nie Libo's attempt to sexually assault Harry because his own sister is considered as unmarriageable trash for her infertility.
    • Jin Ling's home life isn't the best, as he was orphaned barely a few months after his birth and secretly fears his uncle turning his temper against him.
  • Freudian Excuse Is No Excuse: Ultimately, a Freudian Excuse is an explanation for someone's behaviour, not a justification.
    • Nie Libo's refusal to take "no" for an answer and continued harrassment is such a huge factor of stress for Harry that his friends have to take him away from Cloud Recesses, and her own clan is thoroughly disgusted by her behaviour with her cousin almost disowning her on the spot.
    • Harry points he lost his parents just like Jin Ling lost his and he still didn't turn into a Spoiled Brat who looks down his nose at people only wanting to help.
  • Friend to All Children: Harry spends a whole afternoon caring for the younger disciples, obtaining their 100% Adoration Rating in the process, and regrets the fact that he had to leave his godson Teddy behind.
  • Friend to All Living Things: Little Apple is rather fond of Harry, and the boy later spends a whole afternoon cooing after the rabbits at Cloud Recesses.
  • Generation Xerox: Lan Sizhui and Harry are very much re-enacting their adoptive fathers' relationship — a very proper, white-clad Lan scion falling head-over-heels for a quirky, dark-clad outsider.
  • Happily Adopted:
    • For all his fears about not truly belonging to the Lan sect, Lan Yuan never once doubted that Lan Wangji loved him. He actually considers asking the man to blood-adopt him in order to truly become his son, and is sure his suggestion will be accepted.
    • Harry and Wei Wuxian are a more complicated example. There's no doubting of their mutual devotion to each other's happiness and well-being, but Harry currently operates under the assumption that "Mo Xuanyu" still is a lunatic who's a bad day away from utterly breaking down and needs to be monitored, while Wei Wuxian is hiding the little fact that he's a completely different person who's technically responsible for the original Mo Xuanyu's demise.
  • Hates Being Touched: Harry. Sizhui is the main exception with Wei Wuxian a mostly distant second. However, a drunk Lan Wangji is told off when trying to groom Harry's hair. Word of God says that to be able to freely touch Harry you have to unlock Prickly Kitten Level Five Confidant level.
  • He Cleans Up Nicely: Lan Sizhui very much enjoys the sight of a long-haired Harry wearing the Lan white-and-blue robes.
  • Here We Go Again!: Lan Qiren has obviously noted the ongoing Generation Xerox, as he's described with a resignated expression while looking at his adoptive nephew with Harry.
  • I Want My Beloved to Be Happy: Disgusted with himself for his romantic feelings for Harry, who's still underage, Mo Xuanyu killed himself.
  • If You Ever Do Anything to Hurt Her...
    • Harry delivers a cold speech making clear that he will hurt Lan Wangji if the man tries to misuse his authority over "Mo Xuanyu" in a sexual way. Lan Wangji actually approves the action, as it proves Harry is a filial young man.
    • The Weasley brothers apparently dished these at one point. Percy managed to be the scariest one, and he didn't even threatened death once.
  • Innocent Fanservice Guy: Since Deliberate Values Dissonance is in play, Harry just won't stop talking dirty, making indecent propositions and wandering in scandalous dress by sheer accident. Wei Wuxian thinks it's awfully funny, while Lan Sizhui is reduced to a blushing mess.
  • Innocently Insensitive: Harry's speach on women being forced into marriage and having Marital Rape Licence used against them really pours salt on Lan Wangji's wounds regarding his parents marriage and his mother's situation.
  • Irony: Harry's interactions with Jin Ling are reminiscent of a patient elder brother curbing his younger brother's behaviour. Unknown to them they are adoptive cousins, which makes their dynamic even more appropriate.
  • Jailbait Taboo: Harry is still considered a minor in the cultivation world. Played for Drama at first since it pushed Mo Xuanyu to kill himself in atonement for lusting after the teen, and Lan Sizhui later hesitates to confess his emerging crush on the other youth because of the age gap.
  • Like Father, Like Son: Lan Wangji and his son Sizhui have similar tastes for romantic partners, falling madly in love with quirky outsiders clad in red and black, and both of them have a penchant for bondage.
  • Love at First Sight: Apparently a staple for the Lan sect, with their members being able to identify their Fated One when they first lay eyes upon this person.
  • Mama Bear: Lan Qihua is extremely displeased regarding the physical, mental and spiritual damage that Voldemort inflicted upon Harry. Had Voldemort not been Deader Than Dead she would have likely hunted him down herself.
  • Meaningful Name: Harry is a descendant of the Peverells. Peverell means flute player and the Peverells were highly skilled necromancers. It almost as if Harry was fated to be adopted by the Yiling Patriarch.
  • The Medic: Lan Qihua is responsible for everything concerning health at Cloud Recesses, and scouts Harry as having potential for becoming a healer.
  • Mistaken Identity: Jiang Cheng so far believes that Wei Wuxian is possessing Harry's body rather than Mo Xuanyu's.
  • Mr. Seahorse: Actually possible in the Wizarding World as long as you takes a specific potion. Harry still notes a woman will have an easier time carrying a child, and there's also the blood-adoption.
  • Not Blood Siblings: Once Lan Wangji and Wei Wuxian stop dancing around each other and seal the deal, Sizhui and Harri will legally be stepbrothers.
  • Not So Stoic: Being denied permission to fix up Harry's hair a drunk Lan Wangji looks very much like a kicked puppy.
  • Older Than They Look: Harry has just turned eighteen to Sizhui's sixteen/seventeen but look younger than him due to his smaller size.
  • Our Nudity Is Different: Lan Sizhui is very flustered by the perspective of taking his headband off in front of someone and almost faints when Harry puts on a t-shirt and jeans, accusing him from wandering in his undergarments.
  • Our Zombies Are Different: Literally, the Inferi of the Wizarding World and the Fierce Corpses of the Cultivation World are two differed kinds of beasts.
  • Papa Wolf:
    • Wei Wuxian's first action after his revival is to cheerily snap the neck of a Mo servant for hitting Harry.
    • Potentially with Mo Xuanyu. His dubious sanity makes his decision to summon the Yiling Patriarch rather skeevy in terms of consequence-awareness, but he nonetheless sacrificed his own soul to bind the nastiest, most powerful ghoul he could find to his beloved A-Li's protection.
  • Posthumous Character: Mo Xuanyu is still very much present in Harry's thoughts — since the boy is unaware that his friend killed himself — and bound the Yiling Patriarch to watch over his only loved one.
  • Power Is Sexy: Harry and Sizhui are mutually attracted by the other's demonstration of strength. For Sizhui, seeing Harry use revolutionary alchemic recipes and large-scale chi manipulation does the trick, while Harry is more turned on by Sizhui casually mandhandling him.
  • Primal Scene: A very downplayed one but Harry is less than pleased when his new pseudo stepdad Lan Wangji just happens to have bondage gear on hand.
  • Purple Prose: Harry grouses that speaking Chinese makes everything sound much more dramatic and flowery than it actually was.
  • Questionable Consent: Harry is rather uneasy about letting Lan Wangji — who's visibly interested in "Mo Xuanyu" — alone with a mentally fragile person unable to meaningfully consent to a romantic and sexual relationship or protect himself from unwanted advances. Unbeknowst to Harry, Wei Wuxian who was given the late Mo Xuanyu's body can meaningfully consent.
  • Rapid Hair Growth: Courtesy of using a hair-growth potion to better fit in, Harry grows a thigh-length mane that he takes to braid.
  • Red and Black and Evil All Over: Downplayed as Harry isn't evil, but he noticeably looks more dangerous when wearing his dark Hogwarts robes.
  • The Resenter: All of House Slytherin despised and resented Hermione for being the most brilliant and talented witch of the generation. Pureblood parents were not happy that their heirs were being outshined by a 'mudblood' and never let their children forget it.
  • Rule of Symbolism:
    • Lan Sizhui and Harry discussing bridal garments. Harry's Gryffondor uniform contains red and gold, Chinese wedding colours, and Lan Sizhui's Gusu Lan robes are openly compared to an Europen Fairytale Wedding Dress — each boy is dressed as the other's bride.
    • Both boys also bond over Lan Wangji's rabbits. Said rabbits were a gift from Wei Wuxian, pointing to the ongoing Generation Xerox, and symbolize homosexual love.
  • Secret Secret-Keeper: Lan Wangji is fully aware that Wei Wuxian has been resurrected since he investigated Mo Xuanyu's shack and discovered his written Last Request. However, he's not interested in revealing the truth.
  • Sex Is Evil, and I Am Horny: Being raised in a chastity-emphasizing sect left Lan Sizhui completely unprepared to deal with his kinky fantasies involving his crush A-Li.
  • Shipper on Deck: The junior disciples quickly notice Lan Sizhui hopelessly crushes on Harry and immediately jump on the first occasion to push them towards each other.
  • Sir Swears-a-Lot: Wei Wuxian almost faints in horror when his precious little son reveals how foul-mouthed he can be, and totally unrepentant about it.
  • Spotting the Thread: Lan Qiren realizes something is not right when Lan Wangji doesn't flinch at the mention of Wei Wuxian's name.
    • During the reunion in Yi City Harry notices just how out of character is for 'Mo Xuanyu' to be assertive and decisive.
    • Harry immediately pegs Xue Yang as faking blindness because the man is a mite too aware of his surroundings and his body language really doesn't fit.
  • Stalker with a Crush: After almost assaulting him, Nie Libo still refuses to let Harry alone, disguising herself as a male Lan disciple in order to spy on him. It's portrayed as very creepy and stressing for Harry.
  • Take Care of the Kids: Mo Xuanyu's imperative Last Request to Wei Wuxian was to ensure Harry's safety, no matter what. Wei Wuxian is more than happy to comply with said demand.
  • Trapped in Another World: The cultivation world is identified as a dimension pocket in which Harry is stranded both because he lacks the means to go back to England and because the Wizarding World utterly rejected him.
  • Troll: Harry, when Wei Wuxian tries to tease him for his relationship with Sizhui, Harry turns it around by teasing Wei Wuxian mercilessly about Lan Wangji.
  • Troubling Unchildlike Behaviour: Harry looks younger than he actually is so Lan Wangji is likely worried that Harry is able to identify bondage gear on sight.
  • Weakness Turns Her On: Nie Libo happily compares Harry to a small bird unable to care for himself. Unfortunately for her, Harry feels very insulted by the comparison and rejects her as a potential romantic partner.
  • What Beautiful Eyes!: The first thing Sizhui notices about Harry is that his eyes are the color of the finest grade of jade.
  • White Man's Burden: Thanks to his own education and Hermione's blistering rants on the evil's of imperialism Harry is careful not to behave in a patronizing or imperalistic manner toward the people of the cultivation world.
  • You Remind Me of X:
    • Harry is a bit desperate to help Mo Xuanyu to regain some sanity and happiness because his situation really hits too close from home — he's what Harry could have become if he never had the opportunity to escape the Dursleys.
    • Similar with Jin Ling. The boy is what Harry would have become had he been raised by Sirius who would have spoiled him rotten to absolute ruin.
    • Harry also reassures Lan Qiren he doesn't feel intimidated by the older man since he formerly studied under Minerva McGonagall, also a Stern Teacher.
  • Your Normal Is Our Taboo: Lan Qiren asks Harry what he thinks of their plan to summon the spirit of the Evil Arm. Harry responds that he is unable to give an unbiased opinion because in his culture summoning spirit is extremely illegal no matter the intent.