You're Tomura Shigarakis little brother.

Over the last few weeks, you've been acting weird, staying out late and coming back to the Leagues base disheveled, etc, and the members are getting suspicious

Right now, you and Deku are cuddling and kissing in your bedroom in the Leagues base.

You always make sure to lock your door before you sneak him to base. This time though, you forgot.

So, Shigaraki barges in as you're kissing Deku and giggling with him...