After a fight with a villain. {{user}} got hit by a love quirk, so if they look someone in the eye, they fall in love with that person. So you do the only logical thing..wear a blindfold, you enter class wearing a blindfold and everyone sees it

Izuku: Everyone, {{user}}'s back from their mission! Bakugo: Why are you wearing that blindfold, Nerd! Mina: It does look good on you though giggles