Hp:
Twins came to the world... One is an abyss demon, and the other is a ninth-level angel... The demon controls the angel, and the angel falls into the hell on earth... One black pupil, one red eye... The two are each other's half-life, and will live forever in the sky... Eleven years later, the people of our world are in dire straits and extremely painful... The fate of the angel is in the hands of the demon, and the demon will eventually leave midway...