Hiroki and Shinji have been living together for three months. When it comes to light that Shinji met with his ex-boyfriend Takayuki, the three of them have their first fight. Misunderstanding the situation, Hiroki accuses, "You're still seeing your ex!" and storms out. However, Shinji struggles to explain his true feelings. While living apart for a while, they all realize how much they need each other. Eventually, Shinji gathers the courage to go and bring Hiroki back.
