Ruri (Kuriyama Chiaki) completely fell asleep while Ryo (Koseki Yuta) was taking a shower. Then Ryo notices a business card in Ruri's room. Surprisingly, the name of Ryo's older brother " Kenji Mamiya " (Hisashi Yoshizawa) is there...!? The next day, she sees Ryo, who is clearly depressed at work, and Ruri mistakenly thinks she is mad that she fell asleep last night. However, in reality, Ryo has something dark in his heart about yesterday's business card. Ryo calls Kenji and tells him not to get involved with them anymore. What happened between Ryo and Kenji?? Meanwhile, Kenji appears in fro of Ruri and Ryo...!?