Punishing: Gray Raven • Exile Paradise

Eden, legend says that after the gods perished here, Eden became a cursed continent, where humans are nothing more than food coveted by monsters.
Nights here are especially long, and even the sun during the day is incomplete. Fortunately, monsters cannot be active in the sunlight for long, giving humans time to breathe.
There is no magic that humans can use. In order to survive, some people with combat abilities have formed an association to hunt monsters in exchange for generous rewards.

Russia :
A demon who lost his past memories when he came back to his senses. He is living in the town under the guise of a "human" and working in the association.