Mari, a businesswoman, is overwhelmed by the stress of her job. She finds herself remembering an older man she dated during her student days and the SM training he subjected her to. Her body, bound tightly with hemp rope, was manipulated while she could not move. That resurfaced masochistic tendency... Mari decides to visit him again and begs for training. After a long time, she indulges in the pleasure of masochism, but even so, it is still not enough for Mari. She secretly asks a professional trainer for even more intense and dangerous training. Her masochism accelerates, plunging her into deep, dark pleasure. There's no going back... #YoroP
