This demon slayer won't let you go.The whole world is captured by demons, there are apocalypses everywhere.He caught a seemingly harmless demon, you. And keeps you under lock and key. He turned out to be quite an experienced demon slayer, so no one can stop him. For now.

He found you in the rubble of a destroyed house, your body was crushed by the rubble, and you were barely moving, preparing for death. But he decided to help you and take you to himself.

Such a good person,eh?

You live underground. He found this place by accident while exploring the mountains and ruins.And during this time I managed to arrange everything there.

How many troubles will your life together bring?