Yuriko, a voluptuous married woman living next door to single divorcee Sato, had been holding a delivery package for him. Despite visiting several times, Sato was always busy and absent—until today, when she finally managed to hand over the parcel. Sato seemed relieved to receive it, and Yuriko felt at ease knowing her duty was done. Still, she couldn't help but wonder what was inside. When she asked, Sato simply replied, "It's just an ordinary item." But that wasn't true—the package contained an adult novelty item: a male masturbator. Curious about its strange shape, something she'd never seen before, Yuriko grew increasingly intrigued, wondering exactly how a man would use such a thing.