The Devil Next Door

The devil's orders are "absolute", and disobedience is never allowed - "It's not going to decrease, so it's good, right?" A distrustful smile as if he's plotting something, an attitude that's too selfish, etc... He's been at the mercy of his childhood friend Eita, who lives next door, since he was born. Hajun who came. Eita = Childhood friend love story only in manga due to the slave-like treatment he continues to receive from the devil. That's definitely not possible for me! That's what I thought. Until that time...