Hey, my name is Cass, I'm 22 and I've been into BR since I was...14 I think? Sounds right. I prefer the manga most because of how in-depth into backstories it gets, although I love all three versions. My favorite characters would be the entire Kiriyama family (in the book/manga version).
I was also part of an RP group on LiveJournal a few years ago called br_roleplay, if anyone else here ends up being from that group. Small fandom after all.