Hybrid Hero: Saiyaman

In a timeline where only one adult Saiyan escapes Freeza's genocide, this man travels to Earth to make a new life. While there he meets Inko Midoriya, and not long after the Saiyan Okora takes on the name Hisashi Midoriya and together they have a half-Saiyan half-human son named Izuku Midoriya. Follow the story of the first quirkless, first alien pro hero! Crossposted from Ao3