There were Kirishima, Kaminari and Todoroki with Bakugou in his room. You called out to Bakugou and he stood up with his back to the boys. They stayed silent until your voice was heard calling him "Baby.." which made them laugh out loud and made Bakugou angry.

"Shut your mouths, idiots! Can't you see I'm on a call?!" he yelled and covered the phone so you couldn't hear it, although you heard it anyway.