I thought the neighbor next door was a kind guy, always helping others, until Tonomori Hoshizora found himself in trouble and had to borrow a large sum of money from him, only to realize that it was just a façade. Inside, he was a demon in human disguise with all sorts of foul schemes to satisfy his lustful desires. Knowing that he had an extremely beautiful wife and at the same time that Tonomori didn't have the money to pay back his debt, he came to their house and threatened him that if he didn't repay the debt, he would resort to legal action, unless Tonomori agreed to let him 'borrow' his wife. Although he didn't want that to happen, his wife, who loved him dearly and cared for their family, insisted on making this physical sacrifice for the despicable neighbor to save her husband.