i'm copying this over from the Thorki 18+ discord because i love it
hey lemme rant about a beauty and the beast au for a hot minute. so thor is a bratty prince who is turned into a beast (probs by amora when he wouldn't marry her bc that's just How She Is) and the warrior's three are transformed into other creatures too, i'm not gonna try and shoehorn this to make it fit the disney version bc i'm gonna be incorporating elements of la belle et la bête anyway. so the last bit of amora's spell is that everyone forgets who thor is except his companions, so suddenly loki has his entire life's history changed to being an only child, just as loved, but he suffers from a deep, horrid, existential depression that no one can remedy. like he's sick all the time and he's listless and he just feels like something vital is missing and he'll never have it.
so frigga tries to reengage him in his magic lessons, which he'd mysteriously sworn off when he was a child because for some reason (: the thought of magic terrified him. but as a young adult he has a slightly better handle on it and he thinks what the hell, it might help, he might be able to use it to find what he knows is missing. so he does and he becomes a damn good little witch and decides to go on a quest. as he's questing he is caught in a terrifying storm that startles all the wildlife in the forest and drives him to this castle-like structure carved into the side of a mountain. it's like it was ripped up and out of the mountain itself, loki runs inside to see shelter and thor finds him and thor remembers him and he thinks loki has come to try and bring him home.
except loki takes one look at thor and screams and casts a spell to put him to sleep. once thor's asleep loki looks him over and realizes he's heard stories about this creature, about its thunderous roar that haunts the mountainside and about the despair that plagues this place. he feels for the creature and thinks maybe he can do something to help it. so he lets thor wake up and apologizes for the spell, but thor says it's better than a sword or an ax. and loki introduces himself and kind of talks a little about why he's in the castle and asks if he can stay at least until the storm is over. thor agrees easily, but warns that storms around the castle can last for months. he might be stuck there. so thor finds loki a room and loki magics up some actual furniture bc basically everything is made out of. y'know. stone. and thor is taken aback bc he remembers loki learning magic when they were young
but now loki is so good and is like "fuck if he could only remember who i am i know he could break this curse, he could set me free, we could be brothers again" but he doesn't know how to even try and unpack that. or if amora didn't put something in the spell to prevent that from being an option. so instead he keeps quiet about it and allows loki to just get comfortable in the castle.
fandrall would be lumière in this, but i'd change roles around for sif and volstagg and hogun. not sure what they'd be, but they'd be like losing their shit to thor like "IT'S LOKI IT'S LOKI IT'S LOKI" and trying to get thor to just talk to his fucking brother. but thor just. can't. partially bc he isn't sure what amora put into the curse and partially because he doesn't think he deserves to be loki's brother again. he wants it. he wants so badly to go back and to be loki's brother and confidant again
but he doesn't think it's something that he's allowed to have. he hasn't paid proper penance yet for all the wrong he did when he was prince, the way he abused and mistreated loki in his worst moments. so he stays silent because he's determined to do better this time and to not have it overshadowed and clouded by their past. so he and loki get to know each other from loki's pov, but they're just catching up from thor's. and loki asks how he got like this, if he was born a beast or if something did this. and thor tells him it was a curse, and that the curse can only be broken when he earns the love of the ones he hurt again. the one he hurt being loki, and loki is like "well where are they" and thor just says "close" but doesn't go into it further
and loki's like :\ bc that doesn't make sense. this is the only building around for miles and miles and miles
so how close could this person be? but he lets it go bc clearly thor isn't ready to talk about it. and true to thor's word the storm goes on for weeks, and in those weeks loki spruces up the castle w/ magic. he makes furniture and uses magic to gather food (minor portal/summoning work) and thor is like truly blown away by what loki can do and he gushes all over loki and tells him how incredible it is, desperate for loki to feel appreciated and loved
and loki is like "oh, oh i think this is what's been missing from me" bc when he's with thor he just feels whole and complete and happy. and that's when the dreams start
loki dreams of thor as a human, and they're his memories, some of his happiest, combined with some of the fantasies he had before his brother was taken from him. he dreams about thor fucking him and kissing him and holding him so sweetly. and thor has the same dreams at the same time and at first he thinks it's a cruel joke from amora
but realizes quickly that loki is having the same dreams when loki asks what he looked like as a human and describes thor perfectly as he appeared in the dreams. thor doesn't let on that he had the same dreams. but what ended up getting thor cursed was that he couldn't figure out when he was younger how to deal with wanting loki like he did, and loki was already antagonistic about it so thor just latched onto that and didn't even try to be better.
but he will now, so he's sweet with loki, while thinking that nothing can happen yet because of the form he's in. but lo and behold loki kind of likes his form and they start playing chicken about it and ofc it's going to escalate into loki exploring thor's form and taking pleasure in it bc I Am Like That
and loki tells thor that he might be developing feelings, that he feels like he found something that was missing in himself, and he never wants to leave the castle
and that breaks the spell. thor turns back into a human and loki's memories come flooding back, and when he remembers he's like "why tf didn't you say anything?" and he expects thor to fight back, but thor just takes and loki understands, he gets it, thor felt like he couldn't say something. like he deserved to keep suffering.
so they prepare to wait out the storm, they talk and they fuck (much to the chagrin of sif and the warriors three who are like "ummm we wanna go home pls")
and once the storm ends like two months later they basically race home where everyone remembers thor and welcomes him back as prince and he and loki have to keep their relationship a secret, at least for the time being, but they live happily ever after.
and that is my beauty and the beast au idea lol. no idea if i'll ever write it, but it exists