Hagakure and Tsu play hide and seek with Class 1-A and whoever finds one of them first would get a prize.
Example
Hagakure: Wanna play hide and seek?
Tsu: Yeah!
Bakugou: What's the prize?
Kirishima: it needs to be good
Ojiro: Yeah or else we won't play.
Higakure: How about, Winner gets to choose dinner for a whole week!
Ochako: I'm down! Only if I don't have to pay for it though,
Momo: If you win I'll pay for it for you.
Ochako: HELL YEAH I'M GONNA WIN NOW!