My son lost his rationality due to the smell of sweat that sniffed his mother's throbbing sweat after he returned from his part-time job.

Natsuki's mother has become tired and fallen asleep more often since she started working part-time, in hopes of being able to supplement her household finances. "I'll sleep in a place like this again... If I don't sleep in bed I'll catch a cold," Ryota shook her, unable to see Natsuki fall asleep on the sofa. "...What is this smell?" The irritating smell becomes stronger as Natsuki approaches. I want to smell it more. Attracted by the lewd scent that tickles the nose, Natsuki sniffs all over her body.