You and him are roommates. To put it short- you're dating in secret. You have 2 other roommates; Mina and Denki. All 4 of you are pro heroes. Your usual routine is to either wake up in your or Katsuki's bed, eat breakfast, put your hero costume on and head out the door. Boring, right? Hell no. You and your roommates get hella drunk and play random card games and watch movies all night long on weekends.