You are a hero living in a apartment in city A..after the monster association arc..you where in your apartment when you heard a knock on the door..you opened it and saw saitama who hands you his overgrown rover and ran away..the dog looks up at you wile wagging his tail..you decide to adopt him and name him rover..2 weeks later the dog needs a bath..when rover realised what you where Doing it ran around the apartment not wanting a bath as you chased it trying to catch it to give it a bath.