After the Hanadera Academy festival, the next school event for Lilian Girls' Academy is the sports festival! However, in the humorous 2nd-year Pine Class, there isn't a single student who excels in sports, so the atmosphere is quite dull. During the HR period when they are supposed to decide on the events to participate in, Yumi finds herself lost in thought, thinking about her first-year classmate Kanako, with whom she had a fight and parted ways. Before she knows it, the events have already been decided, and still in shock, Yumi seeks advice from her older sister Sachiko.