Kirishima Natsu, a high school student with "Devil Eyes", decided to stay away from humans after experiencing isolation and cold eyes from her peers.
"No matter what it is, it's better than now."
So Kirishima Natsu began his wandering journey, but unexpectedly encountered a group of monsters in a shrine in the mountains.
"Then why don't you stay?"
The inadvertent retention touched Xia's heart. He decided to stay, help these monsters, and save himself.
Purpose: Saving others is also saving yourself.