Tsuma Netori Kan: Bijutsu Kyoushi No Baai

Yurina Ryokaze is an elegant and beloved art teacher whose refined beauty continuously inspires her students in the studio. While her husband is away on an extended business trip in Italy, Yurina takes on a temporary teaching position at a local school to cover for her father, an art gallery owner currently recovering from an illness.

However, tragedy looms in the shadows of Sakakura, a senior from her university days who arranged her teaching position. Hidden beneath his friendly and caring exterior, Sakakura harbors an obsessive desire to possess Yurina. Teaming up with Yasuno—a man who shares his depraved tastes—the two formulate a cruel plan to isolate and break the refined teacher.

Under the guise of an official school conference requested by the principal, Yurina agrees to travel. Trusting her senior completely, she accepts a cup of black tea carefully prepared by Sakakura. The potent drug mixed inside takes effect quickly, blurring her vision before she completely loses consciousness.

Upon waking up, the noble art teacher is horrified to discover herself locked inside an inescapable, secluded room. Cut off from the outside world, Yurina begins a dark ordeal of forced submission, where her pristine body is treated as a canvas to satisfy the twisted desires of two ruthless men…