This work compiles submissions originally published in the SM magazine "Mania Club." The contributor, Sachiko (pseudonym), portrays herself as a hopeless, depraved mother being trained as a "female slave●" by her own son, Ko. Ko was once an exemplary student—graduating from a top university and securing a prestigious job at a major corporation, the pride of any parent. However, beneath his polished exterior lay a hidden side. He was revealed to be a devotee of mature women, and Sachiko realized with shock that her son saw her not as a mother, but as a woman. Influenced further by an older man named S, whom he met online, Ko developed sadistic BDSM tendencies, eventually coming to view his mother as a slave to be dominated and humiliated.
When Sachiko received Ko's shocking confession, she was overwhelmed by despair and intense guilt for failing to recognize her son's twisted desires. How much pain must this once-serious boy have endured in silence? Despite knowing it was wrong, Sachiko crossed the line, submitting to her son's demands.
In Scene 1, taken to a hotel room by Ko and S, Sachiko encounters T, her son's childhood friend. T had always adored her since childhood, treating her like a mother. When Ko declares with excited eyes, "Mom, today you'll be T's toy for the whole day," Sachiko realizes she has passed the point of no return. Forced to stuff her underwear into her mouth, she is made to perform a masturbation show in front of T. As a humiliating greeting, she gives T a blowjob, taking his semen deep into her mouth.
In Scene 2, S joins in, using various sex toys to torment her with pleasure. Sachiko moans louder than she ever imagined possible, and for her shameless arousal, T punishes her by dripping hot wax onto her body. The scene escalates as she receives semen through penile oral service as an apology, then is doused in a shower of urine to calm her down.
In Scene 3, S begins her formal training as a slave. Ordered to masturbate in front of them, she climaxes pathetically, over and over. S then brings her repeatedly to orgasm, blending pleasure with torment. As punishment for her extreme lewdness, S urinates all over her head. Watching from the side, Ko becomes abnormally aroused, his eyes gleaming with excitement as he films the entire scene.
In Scene 4, her training as a female dog intensifies. Prolonged spanking, forced deep-throating, and enforced enema punishment follow, each scene filled with extreme pain and humiliation. Despite the agony in her abdomen, she desperately pleases the penis, and the video ends with the shameful moment of liquid spraying from her anus, captured on camera.