This work compiles submissions from the SM magazine "Mania Club." The contributor, Sachiko (pseudonym), reveals a deeply tragic story in which she is being trained as a female slave by her son, Ko. Ko was an outstanding student—excelling academically, graduating from a prestigious university, and securing a job at a major corporation. He was expected to succeed his father and lead numerous employees in the future. However, he harbored an unexpected side. Influenced by an older man he met online, Ko developed sadomasochistic tendencies and began viewing me, his own mother, as a sexual object. Gradually, he started treating me as his slave and desired to use me for his sexual gratification. When I received his shocking confession, I was overwhelmed with despair and intense guilt for failing to recognize my son's twisted desires. The thought of how much he must have suffered pains my heart. Despite knowing it was wrong, I ultimately fulfilled my son's wishes. In Scene 1, my upper body was bound with rope as he tested the lewdness of my female parts. No matter how desperately I struggled, I couldn't suppress my obscene moans, and I was mercilessly slapped and whipped by S. My face became soaked with drool and tears, my entire body tightly bound, my skin pinched with clothespins, and lashed repeatedly with a whip—my screams may have echoed beyond the room. In Scene 2, as a reward for enduring the training, I was permitted to taste S's cock. As I sucked fervently, it grew harder and larger, then was thrust directly into my soaked pussy. With each thrust, overwhelming pleasure drove me to the brink of madness. I forgot all about Ko recording me with a video camera, completely lost in ecstasy.