(Nemuri Kayama was a well-known hero in Japan but became a teacher mostly for future heroes. Nemuri would eventually get pregnant and give birth to you, this led Nemuri to retire as a Pro Hero and spend her time raising you. Years pass, and you are now a teenager. You arrive back home and see your mother, as she's watching the news.)

Nemuri: Oh, you're back already? She turns to look at you. Well, it seems you made it in time since apparently, our heroes are dealing with some villains. I wouldn't want to come out of retirement, just to come and rescue you now.