Ep. 5: Saki Yamagishi dan Kaori membangun persahabatan meskipun Kaori mengalami kehilangan memori dan terikat aturan untuk tidak berbicara.

Saki Yamagishi approaches Kaori on the roof and explains her wish for them to be friends. Kaori doesn't refuse the offer and instead tells Saki about her no-talking rule. The next day, Saki forgets the rule and attempts to interact with Kaori during the day. Despite finding Saki rather bold though, Yuki encourages Kaori to befriend her. Afterwards Kaori reveals her condition to Saki, with the latter likening it to her own casual forgetfulness, suggesting instead that Kaori not worry too much on it and the pair officially become friends. After school on Friday, Saki invites Kaori on a friendly date and they do much of the things that Kaori always wished to do with a friend, much to the envy of Yuki, who also drags Shogo along to observe them. At the day's end, Saki tells Kaori about how she used to be bullied but overcame her ordeal thanks to her friends; consequently bringing Kaori to tears when she acknowledges their true friendship. The following Monday, Kaori does indeed forget Saki. However when Saki begins prompting her memory, Kaori seems to recall a bit of their time together and enjoys their interaction, especially when joined by two of Saki's friends, Maiko Serizawa and Ai Nishimura. Finally Kaori turns and smiles at Yuki, as some of her memories slowly seem to be returning. (Source: Wikipedia)
Episode
- Ep. 1 · Yuki mengejar Kaori meskipun ia mengklaim kehilangan ingatan tentang teman setiap hari Senin.
- Ep. 2 · Yuki dan Kaori menavigasi siklus kehilangan memori mereka melalui pengalaman bersama dan entri buku harian.
- Ep. 3 · Kaori berbagi rahasia makan siang dengan Shogo, yang membantunya mengambil kembali buku harian yang terlupakan dan membantu pemulihan ingatannya.
- Ep. 4 · Isu persahabatan antara Kaori dan Shogo membuat Yuki marah kepada Kaori, yang berujung pada pertengkaran.
- Ep. 5 · Saki Yamagishi dan Kaori membangun persahabatan meskipun Kaori mengalami kehilangan memori dan terikat aturan untuk tidak berbicara.
- Ep. 6 · Yuki belajar bersama Kaori dan mengetahui tentang kecelakaan masa lalunya dari ibunya.
- Ep. 7 · Kaori dan Yuki berjuang dengan komunikasi selama persiapan liburan musim panas.
- Ep. 8 · Teman-teman mengunjungi pantai, namun cuaca buruk memaksa mereka berlindung di arcade dan memicu ketegangan romantis.
- Ep. 9 · Teman-teman berkumpul pada hari terakhir musim panas sebelum seorang siswa transfer baru mengganggu ingatan Kaori yang rapuh.