I have a few criticisms about your app, Noire, if you don't mind. First off I understand your age is probably so it works with the picture but with how his family seemed to care for him it doesn't sound right that they'd let him just go to New York for no real reason. Also these 'full power' things worry me a bit as well as sound (no pun intended) a bit OP. You control sound, and while sound can have force it's often force that causes sound, not the reverse like you have. Maybe explain the 'full power' potential a little better and tone things down a bit?

Sound can take things apart, not break things; that's how vibrations (what sound is) works. sound can't shatter concrete and bones because they're solid. Sound could cause a car to fall apart by having it do just that: fall apart. The vibrations losen and seperate the pieces. Plaster on walls is flaky so it works different but the same idea is there. Hope I'm making sense, and I can explain more if I need to, but I felt I should clarify some of the stuff your power shouldn't be able to do.