Ep. 4: Rumors of friendship between Kaori and Shogo cause Yuki to upset Kaori, leading to a fight.
Aired on April 28, 2014

A class rumor that Kaori and Shogo are friends makes Yuki jealous, causing him to snap at Kaori about her inquiries. This leads to their first fight, and Kaori leaves school early on Friday. She loses her diary at a river, while Yuki seeks comfort from Kiryu. Kaori catches a cold at home, knocking a reminder about the diary off her door. On Tuesday, she returns to school, but Yuki is shocked when she cannot remember him or the diary. Depressed, Yuki consults Shogo, who encourages him to search for the lost item. Shogo then helps Kaori realize her memory loss. The next day, Kaori visits the river and finds Yuki searching for the diary. Upon finding it, Kaori accepts its importance, and the pair reconcile, restarting their cycle.
Episodes
- Ep. 1 · Yuki pursues Kaori despite her claim of losing memories of friends every Monday.
- Ep. 2 · Yuki and Kaori navigate their memory loss cycle through shared experiences and diary entries.
- Ep. 3 · Kaori shares lunch secrets with Shogo, who helps her retrieve a forgotten diary and aids her memory recovery.
- Ep. 4 · Rumors of friendship between Kaori and Shogo cause Yuki to upset Kaori, leading to a fight.
- Ep. 5 · Saki Yamagishi and Kaori build a friendship despite her memory loss and no-talking rule.
- Ep. 6 · Yuki studies with Kaori and learns about her past accident from her mother.
- Ep. 7 · Kaori and Yuki struggle with communication during summer break preparations.
- Ep. 8 · Friends visit the beach but bad weather leads to arcade refuge and romantic tension.