Yuzuru, who has lived as a bachelor with his father Roji, is one day introduced to a woman named Shizumi (Shou). Yuzuru, who has no immunity to women, always brushes off Shizumi's constant smiling approach with indifference... One night, after drinking too much during a dinner for two, Shizumi, in her drunken state, mistakes Yuzuru for Roji and ends up sucking his cock. Since then, Yuzuru can't stop thinking about it and becomes obsessed with Shizumi, but ironically, he witnesses Shizumi and Roji having sex...
