I agree with Tae on everything she's said c: I already mentioned a lot of points in chat, but I like Lute, a lot. I really like the idea of that sound magic, I love unorthodox and surprising powersets so I thought that was really cool. I also like the interaction potential it brings. Amplifying sound could lead to him amplifying Selan's singing to affect more enemies, for example? Or silencing Moira from shouting until he gets pummeled in the face for it. |D 

Poor social skills could also be hilarious if characters catch him talking and muttering to his familiar, but being unable to hear the other part of the conversation, they might all think he's a weirdo? |D

I wouldn't mind him being Rank F, perhaps. I suggested G though, because I've not seen Kei's fighting posts enough to be sure how well it's balanced, although I'm sure it is. I think F rank, and being on par with Estelle, Lisette, Syed etc sounds decent (although Rank =/= skill, power etc of course, variety of factors. I'm rambling now).

Have a great day at school, Tae, and good luck with your night class!