| 29-year-old Natsuki bumps into 25-year-old Sôichirô while on vacation in Hokkaido. Back in Tokyo, Natsuki discovers Sôichirô is her friend Haruko's younger brother, and they all end up living together along with Fuyumi, a third friend. Natsuki and Sôichirô form a strong bond, but become involved with other people all the while wondering who they should be with. |
| Name | Character | Episodes |
|---|---|---|
| Yuriko Ishida | Fuyumi Tsurumachi | 12 |
| Hideaki Ito | Kobayashi | 12 |
| Kippei Shiina | Tatsuhiko Kuga | 12 |
| Yoshino Kimura | Nazuna Kurata | 12 |
| Rena Tanaka | Rina Kamiya | 3 |