In a dimly lit clinic, a tall, busty Japanese OL, Kumiko, undergoes an unusual examination. The lewd doctor, hidden behind a two-way mirror, watches as she undresses, revealing her luscious, full breasts. On the examination table, her legs spread, she's unaware of the voyeuristic eyes on her. The doctor manipulates the ultrasound wand, his eyes glued to her large, bouncing breasts in the monitor, his excitement growing.