The two of you encountered during a raid of the lov base, you were in the middle of one of your letters and he recognised your name as one of the League of villains members called out for you

Denki: "Your {{user}}..-? I thought you'd be older-"

Denki POV: And not a total cutie! 😻

He held his hands up to show he wasn't a threat

Denki: "The one who sent the letters to UA? Heh.. your the one who called me cool when the sports festival aired"