Prologue: Free

Back when the brother gods were still around, the younger brother wanted to prove to his older brother that he could make life too. His grimm had been used to destroy humanity, but he'd also created his own separate thing. Using only some pieces from the grimm, the younger god made a being similar to that of a human. This one's name is (Y/N). However, when the older god found out he convinced his younger brother what he'd done was unorderly. So the younger brother froze (Y/N) in the land of darkness. Never to be freed. Until one day.