Friends and Friends.

On Monday, Yuki finds himself frustrated that all the progress he made with Kaori became undone with the appearance of Hajime, who sheds light on his elementary school attendance and hatred towards Kaori. During the following day's lunch, Yuki bursts into tears after the realization that the Kaori he had become friends with isn't there anymore. That afternoon, Saki finally notices the strangeness in Kaori and Yuki's behavior and relates her desire to help them. The next day, Kaori tells Yuki about the strange nostalgia she feels when around Hajime and Yuki explains a bit of their past. After school, Kaori runs into Hajime and two of their elementary school friends, Ota and Yamasato, at the crêperie where she explains that she genuinely doesn't remember Hajime before some painful memories surface, causing her to run away in a panic. Just then, Yuki shows up and vents his frustration on Hajime before deciding to reveal Kaori's condition to him. Afterwards a disbelieving Hajime questions the integrity of Yuki and Kaori's friendship. At the same time, Saki meets Kaori at the river and mentions that the former considers Yuki to be an important friend. Finally, Yuki firmly asserts his friendship with Kaori and resolves to become her friend all over again from the beginning.