Parent apathy to sexual education leads to various troubles for the young cast.
Teacher Harada
Mayumi Nishida
Haruo Nomura (as Tatsuji Ehara)
Mitsue, Akira's mother
Kunio Mizutani
Kyoko Nakazato
Shizuko, Kyoko's mother
Kimi, Haruo's mother
Hikoichi, Mayumi's father
Yasuzo, Haruo's father
Natsu, Mayumi's mother
Nobuyuki, Kyoko's father