Lewd family: stepmother's bedroom (1991)

"Inran Kazoku: Gibo no Shinshitsu" is a softcore/Drama-movie from 1991, directed by Minoru Inao. This film was produced by Shintoho, known for having made/distributed loads of "pinku eiga" movies many years. This is my first review about films like this. Wataru, a young, nerdy-like man who also narrates the film's story. He uses some of his time to peep into parents having sex, as well as his sister, and is often seen masturbating a some porn magazine.