Young sex: Rankô shori
Pinku from 1972.
Genre:
Cast: Misa Aoyama, Aya Hozumi, Mami Sakura, Junko Miyashita, Aki Uehara, Shinji Kubo, Katsurō Sakai, Yasushi Matsuura, Akira Sakamoto, Reiko Ohtsuki
Crew: Shinya Yamamoto (Director), Tsutomu Yamada (Screenplay), Katsuzo Ando (Sound Recordist), Shuji Sasano (Director of Photography), Akira Mori (Original Music Composer)