"Both of you. You reacted normally-he didn't-well not entirely."
She sighs
"Might be best if I explain. My quirk is called Music Manipulation-you get the idea. Typically, the way it works is I do something to get people's attention-once their focus is on me I can more or less transfer whatever song I'm thinking of onto them. Once that happens, I can control 'em. Typically, I sing a bit of the song-first few lines maybe, after that-it's smooth sailing. Unfortunately, I can't get people to do much. Mostly just freeze them in place-maybe get them to move wherever I want on a good day-just a bit though. Just enough to say...steal their keys into a vault...It worked on Green Bean. He froze right up. But you..."
She glares at him
"You sang back."