"I'm sorry for the inconvenience, but I'll be counting on you, as I have a small child." Yu, a beautiful woman who moved in next door to Kentaro, is a single mother who recently divorced. "I've been looking for you for ages, you were hiding in a place like this!" A few days later, Kentaro comes home to find Yu arguing with a man. From what he's saying, it seems the man is his ex-husband and is about to hit Yu. "What are you doing? I'm calling the police!" Kentaro quickly steps in and saves Yu, and the distance between Yu and Kentaro quickly closes...