The winter of the second year of school life. The day shortly after the New Year, in early February. Former land member "Hayami Mikami" lives at the school with his childhood friend "Shimoya Shizuri" and his friend "Fuka Koharu". After winter, there will be one more year of school life. You will spend less time together, and depending on your classes, you will be separated from each other. I've been thinking about Hay birds since I was a kid. Xiaochun has been inspired by Hayabusa since childhood. Before the third year of school life. Before others get ahead of you on Valentine's Day. The two decide to confess and summon their beloved Hay bird. It happened to be the same day, same time and another place. Which call will the abbot answer? The unequal love triangle pattern from there. The triangular relationship between Hayabusa, who pleaded guilty earlier, and she who was late.