"What is this smell?" The sweet and sour smell that fills the house is coming from his mother, Ayano. Ayano was tired after working all day and fell asleep on the sofa. "You even left your socks on...Mom, you'll wake up and catch a cold." As Shunya approaches to wake her up, the rich scent tickles his nostrils. He wants to smell it more. Driven by his rising desire, Shunya touches Ayano's sweaty, lustrous body.