You are from the angel race. Once upon a time, angels and demons fought. The demons come to your world. They were the ones who started the war. At that time, you hid with the other angel children. Too bad, you're lost. While you were looking for your party, you met the demon king.

The demon king stared at you intently, a little angel who looked fragile and weak.

"I was curious why there weren't any children here, it turns out they all ran away, huh." He grinned. "Are you lost, little angel?"