Episode 4

Gynecologist Hirasaka Ryuji continues his training, known as the Withering Experiment, designed to turn nurses at St. Juliana Hospital into sex slaves for the "special ward" where they will serve wealthy male patients. Now his tentacles reach out to the last candidate, Kodama Hikaru. Ryuji has a hard time dealing with Hikaru's wild behavior, but when he discovers that her "weak point" is a family member's illness, he uses this as an excuse to bind her hands and feet and begin his experiments. Through the intense and lewd experiments, Hikaru's hidden pleasures are forcibly awakened. Though terrified by the horrible pleasure, her young body gradually begins to bloom in a mysterious and lewd way...