Big-breasted beauty Sayuki Kanno makes her debut in an incontinence release, marking her first appearance with Fitch. Working as a temporary employee at a pharmaceutical company, she agrees to become a test subject for a new drug as a condition to become a secretary. As the drug takes effect, her body gradually transforms into a more beautiful form—but it comes with the side effect of uncontrollable urination, leading her to wet herself in the office. Caught mid-accident by researchers, she's further drawn into humiliating sex in front of her department chief. With no access to the toilet, she experiences squirt-filled intercourse and is subjected to vibrator torture while soaked and glistening with oil. The story unfolds as she falls into the role of the president's personal incontinent secretary, caught in a web of shame and training.