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.
| Actor | Role |
|---|---|
 Asumi MiwaHiromi Yoshii | Hiromi Yoshii |
 KirariChisa Noda | Chisa Noda |
 Hirono KudoNao Yokoi | Nao Yokoi |
 Yukie NakamaChieko Takamori | Chieko Takamori |
 Mitsuru HirataKakegawa | Kakegawa |
 Mitsuru FukikoshiYoshimura | Yoshimura |
 Moro MorookaYazaki | Yazaki |
 Toru TezukaUehara | Uehara |
 Ikkei WatanabeKobayashi | Kobayashi |
 Tadanobu AsanoCaptain XX | Captain XX |
 Naomi KawaseWoman speaking to Hiromi (voice) | Woman speaking to Hiromi (voice) |
 Akira IshidaYoshio | Yoshio |
 Kotono MitsuishiRadio Host (voice) | Radio Host (voice) |
 Megumi HayashibaraAnswering Machine (voice) | Answering Machine (voice) |
 Taiju OkayasuOdagiri | Odagiri |
| RRitsuko ShimadaAoki | Aoki |
 Harumi ShuhamaIshioka | Ishioka |
 Hitomi MiwaHiromi's Sister | Hiromi's Sister |
 Ken OsawaBusiness Man | Business Man |
 Nana OkadaHiromi's Mother | Hiromi's Mother |
 Leo MorimotoHiromi's Father | Hiromi's Father |