In this story, we follow Nel, a cross dresser trying to enter a prestigious all-girls school by hiding her true identity as a man. However, when she undergoes a physical examination at the school clinic, her secret is exposed, and she finds herself at the mercy of the teachers. They use BDSM techniques to train her, enlarging her breasts with a suction device designed specifically for females. Despite being punished, Nel becomes aroused, leading to further humiliation. Her anal opening is stretched using a large dildo while she's bound spread eagle on a bench, causing multiple orgasms. As a result of her submission, Nel becomes a masochist and is used as a sexual plaything by the teachers, proving that even in the most unexpected places, there are those willing to explore their darkest desires.

男の娘であることを隠し名門女子〇に入学しようとしたネル。ところが保健の先生に身体検査をされ性別を偽っていたことがバレてしまう。教師に弱みを握られSM調教の玩具にされる。乳首吸引器で女の様に乳首を肥大化される。お仕置き中なのにペニクリが勃起してしまい反省してないと責められる。分べん台で大股開きにされアナルを極太ディルドで拡張。何度も牝イキする変態オトコノコはマゾ認定され教師たちの性処理便所にされる！※ 配信方法によって収録内容が異なる場合があります。