In elementary school, jealousy from other girls drove Koyuri to push her childhood friend Hoshiichi away, and she's regretted it ever since. In high school she found herself in the same class as Hoshiichi. At first, Koyuri was unsure, but she it turned out still enjoyed spending time with Hoshiichi! The two of them finally settled their differences. One day Hoshiichi asked Koyuri, "Won't you go out with me? Koyuri!", But before she could give a proper answer, things became complicated again...? (Source: Shogakukan, translated)