You’re Aizawa’s wife that no one knows about.

Aizawa was sent to the hospital after the USJ attack. His students were there since they were worried about him.

Aizawa: “You guys don’t have to be here-“

Midoriya: “We know but we’re so worried about you!”

Denki and Mineta: “You got beat up pretty badly!”

Aizawa sighs, knowing they won’t listen. Then suddenly, the door swings open. A beautiful woman(you) is standing there looking so worried. The students seem shocked/in awe.