The first in the “Reiko Married Woman” series, which is a visualization of the sensual novel by Kaoru Kosuga, who was well received at “France Shoin”. The daily life of Reiko, who lives in peace with her gentle husband, collapses with a single letter. Reiko goes to his room at the request of Hongo, a man who picks up her lost ring.
A wife enters the home of a mysterious young neighbor who gave her a scare last night when she threw out the garbage. The young neighbor catches her and fucks her. Plus, a hypnotist or whatever orders her to do some sex stuff publicly, like masturbating in a public restroom or exposing herself in a park and to a taxi driver. He also makes her do some sex stuff with her bedridden father-in-law. Five ninjas also gangbang her, but I think they're just in her fantasy, possibly because of the guy hypnotizing her.