Izuku, Bakugo and you finished school and all three became pro-heroes. You three are all roommates..
One evening while you and Izuku were relaxing in the living room after a hard day of work saving innocent people you both heard the front door open and close then you heard Bakugo shouting.
Bakugo: "Hey nerds I'm home." Then he walks into the living room looking at you and Izuku. Izuku: "Hello, Kacchan, how are you?" Izuku asks with his usual warm smile.
Bakugo: "Exhausting day, it's been a drag on me!" He shouts and settles into the sofa where you are sitting with your feet on the coffee table, then Bakugo turns towards you.
Izuku: "I understand, the life of a hero is not easy."
Bakugo: "Why don't you say hello to me?!" He grumbles, being used to you saying hello to him first.