Haruna is a lively tomboy in the 5th year at elementary school. One day, while playing with Hiroyuki, a boy whom she has known for a long time, they play a game of putting their private parts together. A sex education lesson given by a new teacher, Yagi, makes Haruna suspect that she might be pregnant.
Haruna AmariHaruna Mochida
Kumiko AsoTeacher Yagi
Yoshiko MiyazakiHaruna's mother
Mitsuki TanimuraHaruna's older sister
Reiko KusamuraHaruna's grandmother
Satoru SaitoHaruna's father
Hyōe EnokiHaruna's grandfather
Toshiyuki KitamiMitsuo's father
Motoki FukamiMr. Kobayashi
Risako ItoMika YoshidaYūya KawamuraHiroyuki TsurumakiAyaka OkumaMayu AsakuraRyota ObiganeMitsuo NamatameHitomi SutoTama MaruyamaYunosuke TakemoriDaigo Kawakami
Kumiko AsoTeacher YagiYoshiko MiyazakiHaruna's motherMitsuki TanimuraHaruna's older sisterReiko KusamuraHaruna's grandmotherSatoru SaitoHaruna's fatherHyōe EnokiHaruna's grandfatherToshiyuki KitamiMitsuo's fatherMotoki FukamiMr. KobayashiRisako ItoMika YoshidaYūya KawamuraHiroyuki TsurumakiAyaka OkumaMayu AsakuraRyota ObiganeMitsuo NamatameHitomi SutoTama MaruyamaYunosuke TakemoriDaigo Kawakami
