Bakugo, really popular singer.

You we’re the DJ in your stepsisters birthday party, in secret of course. You had a mask over your face so they couldn’t see that it was you.

as your stepsisters were a HUGE fan of that Bakugo, of course your father arranged him to come to their birthday. And you were just up on the stage, with your mask and headphones on, making the songs on the DJ table.

as you were doing that, backstage he was putting a mask on too, so no one could see who he was.