This video compiles footage originally featured in the SM magazine "Mania Club." The protagonist, Keiko, is a genuine masochist who has vowed to serve as a sex slave for her master, Yodo Tsukushi (pseudonym), until the end of her life. Having satisfied her sexual desires through self-bondage and masturbation since childhood, she was discovered by Mr. Tsukushi during college and began undergoing training as a kept slave. Even after graduation, while working in elder care, she spends most of her time living in a livestock shed. There, she undergoes daily training as a dedicated sex slave—performing vaginal tightening exercises, oral servicing lip training, filming self-humiliating masturbation videos, creating perverted handmade outfits, and writing fantasy novels and illustrations—all aimed at serving her master. This release was filmed by Master Tsukushi at the request of the editorial department. It includes intense scenes of sadistic training inside the livestock shed and public exposure play during an SM-themed hot spring trip. Featured acts include electric vibrator stimulation while fully restrained, insertion of small anal vibrators into her sensitive anus, climaxing from dildo penetration, performing blowjobs on unfamiliar men in mixed-gender hot springs, abandonment training while watching her master have sex with other women, outdoor blowjobs, bareback creampie sex, nipple and genital clipping, and reaching orgasm while licking a stranger's toes as her master fucks another woman. Unlike Chika, Keiko has a slender, petite frame that remains unaltered—she is trained specifically as a sex slave designed to arouse men and drain their semen through skilled techniques. Initially trained to service with all three holes—mouth, pussy, and anus—anal intercourse was later prohibited to differentiate her from Chika. Currently, only fingers and small vibrators are allowed to stimulate her sensitive anus; thicker sex toys are reportedly forbidden. According to Tsukushi, on Keiko’s 40th birthday, she will offer her anal "second virginity," during which her master plans to use her anally until ejaculation—even if it causes tearing, crying, or screaming.