"I'm sorry for the inconvenience because my child is small, but thank you very much," said Yu, a beautiful woman who moved in next door to Kentaro, a single mother who had just divorced. A few days later, when Kentaro returned home, he found Yu arguing with a man. Judging from the contents, the man is a husband who has broken up, and he is about to raise his hand. "What are you doing, I'm going to call the police!" By interrupting in the middle and helping Yu, the distance between Yu and Kentaro is rapidly shortened.