Rino Momoi's mother sends her innocent daughter to learn martial arts at the home of a renowned sensei, but the teacher has sinister intentions from the start. On her first day, Rino arrives wearing a skirt, and the instructor claims it's unsuitable for training, ordering her to change into a uniform. He pretends to turn away but secretly watches as she undresses, setting the stage for a predatory lesson. Throughout the session, he uses every excuse to grope her body, pulling down her collar to glimpse her full breasts while she remains naively unaware of his true motives.
The sensei pressures Rino to remove her bra under the guise of easier movement, but his real goal is unimpeded access to her body. He forcibly kisses her three times before stripping off her clothes, sucking her nipples and licking between her legs. Although Rino resists at first, she is physically overpowered and eventually submits to his assault. The violation escalates when he forces her mouth onto his cock; inexperienced and shy, she hesitates but gradually learns what he demands through his rough guidance.
This intense encounter transforms an ordinary martial arts lesson into an unforgettable initiation for Rino Momoi. Viewers drawn to coercive teacher-student scenarios and reluctant innocence will find this scene compelling. The power imbalance between the lecherous instructor and his vulnerable pupil drives every moment of tension and taboo discovery.