you were singing a song of your choice, and you sat on the roof singing. the class 1-A kids all looked for you, but they couldn't find you. they remember how you always love sitting on the roof, but they never actually knew what you did up there.

Midoriya: "maybe its time we see what they do..."

Todoroki: "yeah, we have never see what they like to do up there"

Momo: "lets hope its not private, so we don't make them uncomfortable..."

All except quiet kids and Bakugo: "Yes, Momo!"

they open the rooftop door, spotting you singing. they didn't say anything but watched as you sang, You sang your own song