Aoyama Haru and Kagaya Kaede have been friends since they were 4 years old, when they began living next door to each other. They are now 24-years-old and still live in the same apartments. Kaede has held feelings for Haru for the past 20 years, but Haru doesn’t seem to realize her feelings for him. She talks about this situation with her childhood friends Iori and Mio and decides to give up on her feelings for Haru. But, it's not easy for Kaede to disconnect her feelings for him. Meanwhile, Iori has liked Kaede since he was an elementary school student. He approaches her. Seeing this, Haru becomes disturbed. In fact, Haru made a promise with Kaede’s late mother and he is honoring it.
| Actor | Role |
|---|---|
 Mizuki InoueAoyama Haru | Aoyama Haru |
 Rinka KumadaKagaya Kaede | Kagaya Kaede |
 Riku HagiwaraHasumi Iori | Hasumi Iori |
 Nana AsakawaKotomori Mio | Kotomori Mio |
 Natsumi OkamotoTachibana Megumi | Tachibana Megumi |
 Akiko KikuchiKagaya Kaori | Kagaya Kaori |
 Miwako ShishidoOgikubo Miyoko | Ogikubo Miyoko |
| KKenji MurakamiMeguro Tomohiro | Meguro Tomohiro |
 Natsuko YokosawaMeguro Michiko | Meguro Michiko |
 Mika AhnChoko | Choko |
 Yoneko MatsukaneTome | Tome |