On the very last day of Summer break, Yuki, Kaori, Shogo and Saki get together at Kaori's house to complete their homework assignments. As the day progresses, Shiho explains the positive impact Yuki's friendship has had on Kaori's life and Shogo reaffirms to Yuki on the importance of the process in helping Kaori through her condition. Afterwards, Saki decides to head home despite not finishing her assignments and Shogo lends her his completed answer sheet which triggers a memory from their elementary school where he had also done this for her in the past...