Kana Kusakabe, a female J-cup employee, forgets about her job and indulges in pleasure. The air conditioner that broke down at midnight the day before the presentation had been prepared for half a year. A hot and humid office on tropical nights. Sweat pooled in the valley, and her breasts could see through her shirt. Her colleague loses her mind and Kana says no, but her busy and frustrated body sinks into pleasure after a long time. She shakes her big breasts and sweats so much that she shakes her hips frantically several times. Hey, just once... please. Continue until morning