Nagi is finally going back to his hometown that he has never met. In his hometown, he ran into Amano, a top student at a prestigious girls' college. She told her troubles, she just didn't want to marry her fiancé, because she really didn't like that guy, so he agreed to her request to solve her troubles and acted as her boyfriend. This decision was just a coincidence between these two people, the relationship between them is a fiancé couple, and they were the wrong children at that time. The two didn't know that they also had a marriage contract. If the parents wanted to have these two children at the same time, they made the marriage contract at a young age and started living together. Amano objected to his father's decision, so the two Humans have also established rules of mutual non-interference. In the end, although they lived together, a series of ridiculous things happened, and the love comedy with intertwined fate began. It is hard to escape the true fragrance law in the animation industry, and finally the two are happily together