After a massacre, the world fell into silence, with numerous "alien" casualties. Humans took the opportunity to seal demons, angels, and unicorns in a large forest. Some aliens escaped and hid among humans.
Thousands of years later, humans have forgotten the existence of aliens, and the once-blocked forest has risen to become the world's most eye-catching and mysterious "multiple surname" academy.
In order to make themselves stronger, some angels and demons found humans with supernatural powers and signed contracts with humans. Some gained power, and some became fallen angels due to human desires. Some angels became fallen angels, and some demons became even more terrifying.
Angels and demons began to kill in order to make themselves stronger. Some angels risked everything for the blood of unicorns. Some demons made enemies of angels in order to protect unicorns. Unicorns could only hide themselves all day long.
Aliens are not allowed to enter and leave the forest at will, but humans can enter as long as they have a pure heart.
Only demons or angels with a strong will can remain unchanged.
Angels and demons are two opposing sides. Are you willing to be a human, an angel, or a demon?
In this complex academy, please do not violate the rules here, otherwise the judge will laugh and the priest will punish the violators of this game...