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.

Kawarasaki Gonjuro IV
as Isamu Kobayashi

Mako Ishino
as Sayoko Matsuyama

Jun Fubuki
as

Machiko Ohtani
as

Toshie Negishi
as

Masato Furuoya
as

Gō Awazu
as

Tatsuya Miyazaki
as

Hiroshi Fukami
as

Osamu Sakuta
as