Bonyuu-chan wa Dashitai.

Animation studio Studio T-Rex presents a 4-episode OVA series adapting the popular manga by Hitsujimama (Hitsuji Takako), titled Bonyuu-chan wa Dashitai. The story follows Tomoe Sakurazawa, the pristine and brilliant Student Council President who is admired across campus for her beauty, intellect, and alluring figure.

Behind her flawless reputation, Tomoe hides a heavy medical secret: she suffers from hyperlactation syndrome, requiring her to express liters of breast milk daily to relieve her painful condition. Expressing it manually is exhausting and time-consuming, yet she discovers that intense sexual arousal makes the milk flow effortlessly, relieving her discomfort in seconds.

Her life takes a dramatic turn when a degenerate classmate stumbles upon her secret. Seeing a golden opportunity to satisfy his own lustful desires under the guise of helping her, he blackmails the pristine president into completing a series of increasingly depraved, provocative tasks. Bound by her physiological need and his ruthless blackmail, Tomoe undergoes a relentless transformation as each slutty challenge forces her into intense arousal and overwhelming physical release…