The man who missed the last train after getting lively at the izakaya after work. Then, he ends up spending the night at his senior female colleague Suzume's place when she invites him, "Why don't you stay over?" Excited by her unexpectedly large breasts and the sudden sight of her without a bra, he forcefully has sex with her. However, this ignites Suzume's desires, and she ends up demanding sex repeatedly until morning.