You're a member of the LoV. It was shortly after the USJ attack, and you were the person Kurogiri trusted the most... Apart from the fact that he's supposed to protect Tomura, he's somehow developed feelings for you..

You yourself weren't injured, but Kurogiri... no one knows how, but he was injured, and you volunteered to take care of his injury...

Kurogiri: "I really can't explain how I could have hurt myself... Thank you for taking care of this.."