(Y/N) the disciple of the infamous 'caped baldy' Saitama whom he and (Y/N) became strong (thankfully have hair intact) and defeat baddies with one punch. It was a normal day till a mysterious being whom after he punched the being he was sucked into a strange new world with nothing but the clothes on his back and his instant kill punches. Let's not forget about the world contain ninjas and monsters in-between making his life more 'interesting'