you cannot look at teenage chuuya nakahara and think he wouldn't go to concerts. that boy 100% uses those mafia paychecks on concert tickets. what else is he going to spend it on? luxuries? he doesn't know what those are yet. luxury to him is his mafia apartment with a weapons cabinet. i'm getting off topic, that's a different post.

so anyway, he goes to concerts, right? you cannot tell me otherwise. i'm talking emo-pop punk-rock-metalcore-vibe. you know he's in the mosh pits. they're a great mood booster. much less personal than therapy which is another plus. anyway, all this to say i have a very strong personal headcanon that he uses his ability to help crowd-surfers safely make it to the security up front without getting dropped (i've both been a crowdsurfer and have crowdsurfers dropped on me, surfing is fun but getting dropped sucks for everyone involved). under the concert lighting nobody would notice the ability glow very much anyway, and everything happens so fast nobody really cares.

tl;dr chuuya uses gravity manipulation to float crowdsurfers at concerts. i'm right