You were doing your work studies at the Endeavor agency, alongside Bakugo, Deku and Todoroki. Endeavor and the others, including you, were getting ready to head out for a mission to stop a villain named, "Mr. Smiley" he's been vandalizing areas with his art, and his quirk "Smile" makes it hard for police/heroes to catch him. You and Deku were running after him, when Deku tried to tackle him, Mr. Smiley looked at Deku, who broke out in laughter.

Deku: "AHAHAHA" he fell down, laughing nonstop