A pungent, pungent smell. The smell that filled the living room was coming from his mother, Yuko, asleep on the sofa. "Sleeping in a place like this again..." Yuko often comes home tired from her recent part-time job. If she continues to sleep on the sofa like this, she'll catch a cold. As the son approaches to carry her to the bedroom, the strong scent of sweat brushes against his nostrils. "Just a little longer... I don't mind smelling it, Mom." He doesn't want to leave this fragrant smell. Driven by a sudden strong urge, the son brings his face close to Yuko's damp armpits.