Seeing Sanae (Ryoko Kuninaka) who was in the same situation suddenly disappear, Nanjun (Yasaki Yagi) felt hesitated.Although Nanjun didn't want to believe Sanae's statement that God gave us a special time to say goodbye, facing the reality, he felt an unbearable pain.As for Chiyomi Horikiri (Ai Iinuma), who knew nothing about it, Nanjun still cheered up and said: "Let's come to the temple fair together next year."“

After the temple fair, at ”Kana Hair Salon“, Kaede (Kimura Yoshino), Yuriko (Kaga Mariko), Yamataka Zenzo (Kikaishi Ken), Kimura Hisako=Chako (Muroi Shige) and others gathered together to hold a small celebration.Kaede and Yuriko worry that Chiyomi will be depressed because Nanjun didn't come back.Only Shintaro (Takeda Shinji), who knows the existence of the ”15-centimeter Nanjun%, is full of inner conflicts and behaves strangely... Moreover, Kaede and Yuriko become more suspicious of Shintaro's behavior, triggering a vicious cycle...

During this period, Chiyomi's father and Kaede's ex-husband Takeshi (Takeshi Tomizawa) appeared in the town.Without knowing each other's true identities, Shintaro and Takeru accidentally talk in the park.Chako, who happened to witness this scene, thinks that the reason for Shintaro's suspicious behavior may be Takeshi...?Later, Takeshi finally appeared at Horikiri's house, and even Nanjun's college basketball team coach Misuzu (Reina Takeda) suddenly came to Horikiri's house to ask Chiyomiko for guilt!?

While Nanjun was spending happy time with Chiyomi, he also felt uneasy. Nanjun was worried that he would disappear soon.He suddenly remembered what Kaede and Yuriko told him about his mother when his mother Kaede (Yakiko Yagi) had just passed away, and he began to think about how to spend his last time.