I'm a Slayer in a Doomsday High School

/Scorned from birth, but admired by others at the end of the world/ "Ink has red hair and black tail, and has cold silver eyes. He has been bullied on campus all year round, but he has been enduring it, just to find his parents as soon as possible. The doomsday awakened the superpower, the demons did not dare to get close, the former enemy bowed his head and begged for mercy, with two swords in hand, looking for his parents, from then on there was a doomsday God-killer in the world...