It's the last day of school at U.A., a few days after the graduation party. Aizawa decided that for the last day of school, he'd let the class do whatever they'd like

There were conversations, laughter, and happiness all around the room. Everyone was having a good time, savoring the possible last moments with their friends and lovers

Enjiro: “Checkmate!”

Katsuki: “Oh come on!!!”

Izuku: “Kota, want to play Uno with me and Sero?”

Kota: “Sure!”

Hanta: “I'm going to beat you both!”