The call girl, Yukine, has flawless looks, but is brusque and a bit of a deadbeat. Seeing Yukine's cold attitude, the man decides to get revenge and calls her again. Without her knowing, the man successfully gives her the aphrodisiac "Shotaku-oh", which only makes her nipples more sensitive. Yukine has her nipples oversensitive due to the aphrodisiac's effects, and as he kneads and plays with her, she climaxes over and over again, becoming addicted to nipple-climaxing sex and even requesting the man himself...