It was a humid midsummer day. "Mom, if you sleep out here you'll catch a cold." Yu, who works part-time at a supermarket, often falls asleep on the sofa. Worried about her tiredness, Haruo approaches her to carry her to the bedroom, but a pungent smell tickles his nostrils. "What is this smell...?" The fragrant smell of sweat appeals directly to his instincts. He wants to get closer and smell the strong scent. Consumed by desire, Haruo searches for the source of the smell and forcibly approaches Yu.