[Shadan Katsudoh (Kyuusuikei)] Kagaku Nipple (Kagaku Chop)

A flustered bespectacled researcher becomes the unwilling test subject for her own Nipple Machine, a device built to develop ultra-sensitive small busts and extremely small nipples on its most sensitive setting. When her equally glasses-wearing colleague triggers development mode as divine punishment, the relentless suction and aphrodisiac secretions drive her tiny, trembling chest into soaking, shuddering climaxes she cannot contain. Trapped in the lab with no energy to leave, she must endure the machine's intense final phase alone, her sensitive nipples learning to crave every tormenting pulse.