Probably one of those hardcore dudes who you don't suspect is awesome until he busts out the most astounding feats in the world. Probably a pretty decent dresser too. Don't know why I think that. sweatdrop
v Wait...What? I don't know what you mean in the little parenthesis. How young is too young for "Meh mister"? sweatdrop I'm sorry...I'm not too astute today.xp
He's reserved and probably has a close circle of a few good friends. I imagine he likes grungy things. ಥಥ
Sarcastic, probably fashion-forward and interested in design or something, in touch with herself and how much she hates things despite not really wanting to do anything to keep herself away from those things. Probably has a dark and dry sense of humor.
I think La Cantarella is a hard-working student, which would explain her many hiatuses. She knows where her priorities are: duty first, and entertainment second. But when she does go for entertainment, she doesn't enjoy crowds or major events, but instead more low-key things. Perhaps a board or card game possibly an online game with a few friends but not an MMO game. Single-players are her thing, and likely inspire her creative writings, and I"m sure she's getting progressively annoyed at the growing trend of always-on DRM single-players.