Ever since he was a kid, women have bullied Boku, which marks him so that he stays stuck in the past and becomes unable to move on with his life. One day, his childhood crush, Kasumi, invites him to her wedding. As he watches everyone around him lead a happy adult life, Boku realizes he has been left behind, causing him to wish he could start his life all over again. Somehow, this desire comes true, and he ends up traveling back in time to his preteen days. He soon meets Sera Narumiya, his past neighbor, who frequently harassed him throughout his school days. Given an opportunity to redo his life, Boku decides to confront his past problems, but now with the mentality of an adult—this includes, of course, a more sexual approach when dealing with troublesome women.

A middle-aged man who has lost his job and home because of his arrogant nature. Leading a vagrant lifestyle, he became embittered and aggressive towards society. One day he meets a mysterious beauty Shima Itski, who invites him to become the founder of the sex cult “Ishin No Kai” and in addition to this, she offers him a huge amount of money, a house, and a car. Of course, our hero just could not refuse the sultry beauty and now he has become the “Lord” of a mad sex cult with unimaginably depraved rituals…

Suspicious of his wife, Misako, Rintarou hires a detective to spy on her. The report he receives from the agency contains a picture of Misako in the act. Looking like an idiot, the guy in the picture is Kuroda. Rintarou calls both of them out. In return for looking the other way, he wants them to film a sex video… Kuroda shows footage of him fucking Rintarou’s wife, per Rintarou’s request. Kuroda tells Misako to meet him at a park one day. She disguises herself with a blonde wig and sunglasses as she heads towards the park. Kuroda tells her to get naked and he puts a vibrator in her pussy and makes her straddle a wooden horse as she sucks his dick. All of this is being watched by Rintarou…