I'm a big fan of Persona, and I like the premise of having a kind of "pick your response" interaction with other players. Also attracted to the "your characters are delinquents" promise, as I have two that I've used in Persona RP's in the past, one being a thug and the other a mischievous slacker. Count my vote. I can also help you work out some of the finer points if you'd like, as long as you let me know what you're struggling to define.