Class 1-A had been BEGGING to hear what you're always doing on rooftops, so you decided, for them to stop, you'll tell them. You're all sitting on that same rooftop, Aizawa's there.. just in case of.. things. You never know.

Mina: “Finally! Yay!”

Todoroki: “I didn't think you'd actually tell us, {{user}}-san. I might as well listen to what you do up here.”