A horny scientist who is married to a hot wife and lives with his virginal step sister invents a drug that can make him invisible. Erotic high jinks ensue.
Akira
Machiko (Momoko's sister)
Ippei Nakamura
Pink Baby Mei
Female student
Pink Baby Fuu
Momoko Nakamura
2001
2015
2013
1994
2018
1984
1943
1997
2007
1992
2017
1982
1983
2019
2014
1970
