Tsuma Netori Kan: Bijutsu Kyoushi no Baai – Episode 1 (ES)

In this spin-off from the acclaimed "Tsuma Netori ~Female Teacher's Training Diary~" series, the story flashes back to when Makoto was a trainee at the academy. Yurina Suzukaze, a beautiful married art teacher and daughter of a gallery owner, temporarily teaches at the school while her husband works alone in Italy and her father recovers from illness. Popular among students for her graceful demeanor and club activities, she remains blissfully unaware of the dark intentions brewing around her.

Chemistry and physics teacher Sakakura, her university senior, has long harbored an abnormal obsession with her and conducts secret aphrodisiac experiments on staff and students. Managing the abandoned school's basement training room, he allies with fellow teacher Anno Shiro (who targets trainee Makoto) to launch "Operation Yurina Corruption."

Lured under the pretense of a training exchange, Yurina drinks drugged tea from Sakakura, collapses, and awakens naked and bound in the underground chamber—gagged, nipples and clit coated in secret aphrodisiacs, erect and helpless. Sakakura reveals her fate: two weeks of merciless meat-slave training. From vibrating insertions with aphrodisiac lube to enemas and anal violations, the once-proud ojou-sama endures endless, unbearable torment as her body betrays her will in this ultimate NTR descent.