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 Amari
Kumiko Aso
Yoshiko Miyazaki
Mitsuki Tanimura
Reiko Kusamura
Satoru Saito
Hyōe Enoki
Toshiyuki Kitami
Motoki Fukami
Risako Ito
Yūya Kawamura
Ayaka Okuma
Ryota Obigane
Hitomi Suto
Yunosuke Takemori
Kiyotaka Yamada
Satoko Abe
Katsuki Mori
Tasuku Emoto
Juri Ueno
Ken Mitsuishi
Sansei Shiomi