In her uniform, Mikan-chan has recently noticed her breasts growing larger, making them feel heavy and sore. Her nipples have become so sensitive that even the slightest movement against her clothes triggers intense reactions. Worried she might be ill, she visits a doctor—only to encounter a corrupt physician. Under the guise of examination, he begins shamelessly pinching her pink nipples, kneading them roughly, and even clamping them with tweezers. Overwhelmed by sensation, she can barely endure the stimulation. When she changes into a swimsuit, Hina transforms into an even more erotic figure—her stunningly beautiful big tits on full display, with perfect, sensitive nipples that are twisted, poked, and circled with fingers in an increasingly lewd manner. Mikan, equally sensitive, strips her upper body and is taken from behind, her nipples relentlessly tormented. The doctor rubs them with his index finger, squeezes and pinches them without mercy. The rough texture of cloth gloves intensifies the friction, leaving her soaked from the very beginning. Midway, she's instructed to clasp her hands behind her head, further accentuating her large, lifted breasts as her pectorals stretch into her deltoids. The exquisite sensitivity of her nipples and her helpless reactions make the scene intensely erotic.