Class 1-A was given the opportunity to meet and speak to their child selves thanks to a volunteer's quirk.

Al the students were giving advice to their child selves, speaking to them, and overall just fixing mistakes.

Bakugo: "Look kid, stop bullying Deku."

Kid Bakugo: "Why? He's a nerd!"

Bakugo and Kid Bakugo argued, Denki and Kid Denki goofed off, Izuku told Kid Izuku it got better, ect.