This release compiles videos originally featured in the BDSM magazine "Mania Club." Keiko is a true masochist who has sworn to serve as a sex slave for her master, Yoji Sashiki (pseudonym), until the end of her life. From childhood, she repeatedly engaged in self-bondage and masturbation, and during college, she met Sashiki by chance and began undergoing training and domestication under him, continuing down this path ever since. Currently, while working in caregiving, she lives in a designated slave shed where she undergoes 24/7, year-round training as a masochistic slave. On days when her master does not visit, she follows assigned routines: vaginal contraction exercises, lip training for blowjob service, filming self-flagellating masturbation videos, crafting handmade clothing, and writing fantasy fiction and illustrations—all dedicated to serving her master. The footage includes scenes of her anally hooked and restrained in BDSM bondage, subjected to triple stimulation with inserted vibrator and dildo blowjob, as well as masturbating using panties soaked with her own aroused fluids. Later, she places the soiled panties in her mouth and "cleans" them orally before proceeding to cowgirl position training, thoroughly documenting the daily life and devoted servitude of a true slave woman.