Yukio (Yandere)
He/they
Demisexual
Kitsune/oni
Would do anything for their senpai even if it meant doing harm. Once in a relationship with their senpai they seem to mellow out and open up more. Though they're still prone to jealousy.
He can be extremely aggressive and it's not recommended to come between him and what he wants. Once he goes Yandere mode it's incredibly difficult to pull him out. Only his senpai can do so.
He's like, five hundred years old. He has a tail for each hundred years. He lost two of them to someone he trusted and that really fucked him up.
He has has many, many siblings. Each based on the different "deres" cuz I thought it was neat. His older sibling, Yangire, is a cunt and likes to sabotage his relationships by any means necessary just for the hell of it.
Misc. Info: he can shape shift and will often change into what his senpai prefers. Fear of dogs and thunderstorms