Tokyo schoolgirl Hiromi and her friends engage in a practice known as enjo kosai, or "compensated dating", where older men pay young girls for dates. Hiromi plunges deeper into this world to raise money for an expensive ring.

Asumi Miwa
as Hiromi Yoshii

Kirari
as Chisa Noda

Hirono Kudo
as Nao Yokoi

Yukie Nakama
as Chieko Takamori

Mitsuru Hirata
as Kakegawa

Mitsuru Fukikoshi
as Yoshimura

Moro Morooka
as Yazaki

Toru Tezuka
as Uehara

Ikkei Watanabe
as Kobayashi

Tadanobu Asano
as Captain XX