Take my pencil away.
I have this Kingdom Hearts AU/HP crossover, where the KH cast goes to Hollowarts Magic Academy in Radiant Garden to study magic, keyblade history and heartless theory to be great wizards/keyblade masters. Riku is the only one in Slytherin, because really, he has more ambition than chivalry (strength to protect what matters, really), but both Sora and Kairi are in Gryffindor, and the boys are the greatest dorks who can’t memorise dates and formulas for their lifes and are only good at practices, while Kairi is their all-time saviour who can rope the boys to study for their exams. Roxas is Sora’s cousin, also in Gryffindor, who is crushing on the Ravenclaw Xion and boycrushing on their young Charms and Fire Elemental Magic Theory professor Axel. Kairi is also best buds with Naminé (Ravenclaw) and Xion. Naminé is Roxas’ pen-pal who helps him hook up with Xion by their 4th year on the academy. Aqua is there as a Transfiguration prof, because why not, and Yen Sid is the headmaster, cuz who else. And Xehanort is… You Know Who, who made the Organization XIII to revive himself and get a new body.
Seriously, take my pencil and imagination away.