Yuta and Naoko have been living together for five years. Yuta is still kind, but... he hasn't done it for a year. Naoko's problem was sexless. One day, she meets Takeru, who has moved in next door. Naoko is moved by Takeru's smile and gentle tone, and she ends up spending the night with Takeru. However, she is overwhelmed by her feelings of guilt towards Yuta, and decides to break up with Yuta...
