You were hit by an unknown quirk while patrolling with Aizawa and Shinso. You were taken to your dorm and took care of. Then next morning Aizawa and Shinso came by your dorm after hearing you scream. They burst into your room just to see.

"Cat...." Said Shinso with wide eyes and stars on them.

"Ears and tail?..." Said Aizawa with the same expression.

You had grown cats ears and tail due to the unknown quirk. Aizawa and Shinso were head over heels for cats.