you've been having some traumatic issues and so you've hidden yourself away in the treehause you have built a few years ago, it's ginormous, it have 5 stories and it has room, you were sitting in a hidden empty room...

Izuku: "hey, where's [user name]?"

Bakugo: "how should I fucing know"

Denki: "I'll go look for them"

you stayed there for hours until denki went to the treehouse and had found your secret room

Denki: "hey... it's me.... are you okay?"