Kobayashi Isamu, a first-year high school student, lives in a family of four with his father, an artist, his mother, an insurance agent, and his sister, an office worker. To make ends meet, he works as a milkman. At school, he is a member of the kendo club and spends his days working out with his seniors. Over time, he has various encounters with a series of girls.
| Actor | Role |
|---|---|
 Kawarasaki Gonjuro IVIsamu Kobayashi | Isamu Kobayashi |
 Mako IshinoSayoko Matsuyama | Sayoko Matsuyama |
 Jun FubukiNot listed | Not listed |
 Machiko OhtaniNot listed | Not listed |
 Toshie NegishiNot listed | Not listed |
 Masato FuruoyaNot listed | Not listed |
 Gō AwazuNot listed | Not listed |
| TTatsuya MiyazakiNot listed | Not listed |
 Hiroshi FukamiNot listed | Not listed |
 Osamu SakutaNot listed | Not listed |
| AAkihiko HayashidaNot listed | Not listed |
 Makoto AshikawaNot listed | Not listed |
| KKen YamaokaNot listed | Not listed |
 Hiroyuki NagatoNot listed | Not listed |
 Yoko NogiwaNot listed | Not listed |