Divine Flames (Male child reader X adoptive mother Shura Kirigakure)

Human. Demon. Light. Dark. Good. Evil. Haven. Hell. Satan is the ultimate evil and his two sons are seen as powerful beings that should be feared, at least that's the case for Rin. But as of three years ago, there was a third child born. He was born only to die, or at least that was her mission, but she decided to spare the child and seal away the majority of his demonic powers away forever and raise the child on her own.