This video is a compilation of works submitted to the SM magazine "Mania Club." [From the submitter, Sachiyo (pseudonym)] Sachiyo is a hopeless mother who is being trained as a female slave by her own son, Kou. Kou was an excellent student and was a proud son who went on to a major company from a top university. He was in a position to take over her husband's position and lead many employees. But this son was a pervert and saw me, his real mother, as a "woman." Furthermore, Kou had developed a sadistic SM tendency due to the influence of a middle-aged man, Mr. S, whom he met online. Before he knew it, Kou had begun to want to play with me as a slave and violate me. When I received Kou's shocking confession, I was overcome with despair and felt a strong sense of guilt for not being able to notice my precious son's twisted sexual tendency. I wonder how much Kou, who has such a serious personality, must have suffered... Even though I knew it was wrong, I accepted my son's request and crossed the line... Scene 1 - During training, I had to defecate in front of Mr. S and Kou. I was ordered to pee standing up in the toilet. On this day, they checked how much my body's sensitivity had increased through training. I masturbated while pinching my nipples, and they continued to use me as their plaything... Scene 2 - They continued to check my crotch. They persistently stimulated me with fingers and a vibrator, but I couldn't get it to come. Before long, I unconsciously started shaking my ass and begged for an orgasm. This was the result of training... Scene 3 - They made me wear an obscene costume like a prostitute. My crotch was strangely tight, and no matter how hard I tried to hide my breasts, my nipples would pop out. In addition to being blindfolded, I was gagged and had a nose hook, a vibrator on my nipples, and clothespins on my genitals, and I was humiliated more and more. "This is the official uniform of a masochistic slave. Now, go ahead and make a buzzing noise!" Ms. S laughed as she continued taking commemorative photos. Scene 4 - My whole body is wrapped in plastic wrap, and I can't move at all. This is the "mummy" play. A vibrator is fixed between my legs, so I can't stop cumming. My mouth is also covered with plastic wrap, so it's hard to breathe, and my mind is gradually going blank. However, I didn't hate being treated like an object like this...