"Ms.Ren your son does have a quirk called ghost."the doctor said
"Yeah I can become a hero!"Kai said
Time skip cause reasons

Kai was at his house test out his abilities

More time skips

At the play ground the next day

Bakago was bullying a kid cause of he hadn't got his quirk yet Izuku stood up for him but was a measly distraction so Kai went up to Bakago and said " Bakago stop bullying this kid !" And Bakago said "And what are you going to do about it Kai." Kai said "this." And mind controlled Bakago and his friends and made them leave and they did but his head hurt in the end.

A/n Bakago calls Kai Ghostfreak cause of his quirk and cause the time as children