Otama Jakushi
Actor
Mangaka who also appeared in pink films directed by Sachi Hamano. Born 1952 in Tokyo. While working as an assistant to Kimio Yanagisawa, he made his debut in Weekly Shōnen Jump under the name Isamu Yamamoto, but he grew tired of the many restrictions of working on shōnen manga, and in 1976, he re-debuted as an erotic mangaka. The reading of his pen name is intended to sound like the Japanese term for tadpole, ostensibly because of their resemblance to sperm. Hence why the name has been left "surname" first and not romanized in the way that is standard on this site.
Filmography
Groper Train: Sensitive Squirting Girl
Groper
Groper Train: One Shot in the Morning
Groper
Molester Train: Don't Stop, Fingertips
Groper
Chikan densha: Ecchi ga ippai
Groper Train: Beware of Miniskirts
Double E Cup: Ripe
Kitamura Mika: Kyonyû enjuku
Professor Kotama
Chikan densha: Ijô sekkin
Groper Train: Dangerous Neighbor
Chikan densha: Gaman dekinai onnatachi
Chikan densha: Okumade nozoite
Kamata
Chikan densha: Miyuki no yarigai
Isamu Harada