Kamiya Kaoru is an assistant instructor of the Kamiya Kasshin-ryu school. After her father's death, she runs her humble dojo alone, facing eviction from a greedy landlord who is after the dojo's land. Though confident in her sword skills, Kaoru is powerless in the face of money and power. To protect her beloved dojo, she accepts the landlord's horrible terms:
"Be my plaything, and I'll let you keep the dojo."
From that day on, Kaoru's body is at the mercy of the greasy, elderly landlord. O n the dojo's tatami mats, she discovers a man's body for the first time. Her supple body, honed through martial arts, merely trembles under the man's relentless, clingy caresses. An unknown pleasure penetrates her core, easily destroying her will to resist. Once she falls, it's all over.
Late at night, on a deserted street, Kaoru exposes her naked body and begins to devour Jinushi's cock with her mouth and body. The dojo she once wanted to protect is no longer on her mind. All that remains for her is Jinushi's ugly yet powerful body and the brain-burning pleasure it gives her.