The story follows Tomoko, a writer who becomes involved in a strange and distant relationship with Shingo, a married novelist. Though they haven't seen each other in years, an unexpected connection forms. However, tensions rise, especially when Ryota, Tomoko’s ex-boyfriend, reappears in her life. As complications grow, Tomoko realizes she no longer loves Shingo and chooses to break away, despite the loneliness. Eventually, she decides to live independently, also leaving Ryota, and starts anew by the end of summer.

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