this man is evil. he lures innocent students into secluded rooms for enema treatments. he teaches obscene sm to chaste housewives. he kidnaps the president's secretary and subjects her to various forms of torture. university professor sadamaru oni recorded his wicked deeds on video. imprisonment, foreign object insertion, bondage, enema, forced defecation, double penetration, urine drinking, gag, nose torture, nipple torture, anal torture... this video contains every form of sm. featured women include yuu (30s, ol), who is forced to reinsert and repeatedly expel feces. she is finally given an enema with the professor's urine using a dildo. after defecation, her rectum is thoroughly cleaned with fingers. maiko (40s, housewife) is trained as an enema slave, enduring humiliation and excessive defecation. akane (20s, student) is kidnapped and used as a sex toy, fulfilling her fantasy of being a captive. wako (40s, housewife) is subjected to bondage, anal torture, enema, and defecation training after 20 years. nanako (30s, school teacher) has an m branded on her forehead and cries in pain from the glycerin as she expels filth.