This work compiles footage shot by Kaori (pseudonym) and her master, Motomiya (pseudonym), who met through the reader correspondence section of the SM submission magazine "Maniac Club." Kaori has long struggled to suppress intense masochistic desires since childhood, repeatedly indulging in self-degrading masturbation fueled by perverse fantasies. Eventually, she came under Master Motomiya's control and vowed to become a virgin anal-only sex slave. Seven years into her training, on her birthday, she experienced a deeply traumatic and humiliating deflowering. Her virginity was taken not by her master, but by a stranger—a sex worker she had personally hired—using a grotesque strapon purchased from an adult shop, marking a degrading, painful moment of loss. The recording includes approximately four hours of footage: Kaori’s deflowering, the countdown leading to it, the humiliating act itself, her state afterward, cucumber anal teasing, three types of anal torture devices, torment using lewd suction cups, her declaration of virginity loss, scenes of her abandoned and neglected, daily life as a sex slave, degrading threesomes, anal intercourse, painful electric needle torture, and a personal video letter from Kaori. [Before Purchase] This is an amateur SM enthusiast-submitted recording, shot entirely by non-professionals. It contains no scripted performances, dramatization, or narrative elements typical of commercial AVs. This is a rare, authentic documentation of a true female masochist slave, intended strictly for hardcore connoisseurs of amateur BDSM training content. Viewer discretion is strongly advised.