Well, here's my idea. It's a little zany, but that's what i'm going for:
Basically it's a about a girl named Raziel whose parents were divorced so she was seperated by her twin brother Sesseru. When her parents get back together, she has to start going to the the same boarding as he does. At the school, Sesseru pretends as if she doesn't exist. Not only does Raziel have to deal with her brother's dishonment, there's a cult at the school that steals student's souls, and Raziel and her new friends have to fight cult members(that's just the first story arc) I'm aiming for it to be Action/Comedy series, riddled with jokes and parodies and such.