Tall, slender Yuka shyly reveals that she masturbates three times a week and is sensitive in both her clit and vagina. This experiment asks what happens when a cock enters her just before she cums from masturbation. She demonstrates her usual routine with fingers, a wand, and a dildo, then a hard cock plunges into her soaking pussy at the brink of orgasm. Flooded with pleasure, Yuka admits afterward that it felt so incredible she could get hooked.