The frustrated married woman with a big ass, "Miiro Nanasaki," gives a sleeping pill to a man who came to deliver a lost item, believing he's having a delusion, and swallows his big dick, releasing her own sexual desire! The man who knows nothing is confused by himself, having obscene sex with Miiro Nanasaki in a strange feeling where he doesn't know if it's a delusion or reality! Eventually, Miiro Nanasaki, who confessed the truth, writhes her big-assed lewd body and cumming violently many times in sex with a big-dick man!