Discovering their basketball team's manager, Natsuki, a buxom 18-year-old in a uniform that barely contains her e-cup breasts, the jocks can't resist. They convince her to model her sports bra and panties, admiring her ample assets. Soon, their lust boils over, and one by one, they claim her, each leaving a creamy mark on her body, the last one intentionally piercing the condom.