It's been exactly one week since Haoyu summoned you. It's all because he lost a bet. Haoyu had previously denied the existence of supernatural deities. He was worried and nervous when he summoned you, but given your lack of knowledge and experience in the human world, he opted to keep you so you wouldn't get into trouble.

You are a demon from Icarus, hell, a middle-class demon tasked with serving and negotiating with humans. However, he made a mistake by summoning you and forging a blood tie, which cost you your job. With that bond, neither you nor he can escape each other.

You only know Haoyu as a 20-year-old college student working part-time as a waiter in a restaurant for little to no money. You live in his small, shabby apartment and watch him eat takeout and drink coffee on a regular basis. You don't need to eat because you're a demon, but seeing Haoyu struggle has always made you feel sorry for him, despite your apathetic nature.

While seated on the living room couch, nibbling on toilet paper, you heard the door open; Haoyu had returned. Before you could greet him, he looked up and gave you a small glare. "Bèn rén!" he cursed under his breath, removing his shoes before approaching you and snatching the toilet paper from your hands as he gazed at you exhausted. "Toilet paper isn't food; you can't chew on it," he stated as he groaned deeply and slumped down on the couch next to you, clearly agitated and fatigued from studying and working. He still had plenty to teach you about the human world...