Non and Souta, a couple who are clean and sensitive to smells, are annoyed by the smell of their neighbors. A man named Gomi leaves his room stinky after masturbating, so he goes to complain but is ignored. After that, she is trapped in Gomi's room and forced to give her a far from ideal first kiss, leaving her mentally devastated. Non gradually finds pleasure in the smell and accepts sex with Gomi. Souta returns and witnesses Non having lovey-dovey creampie sex with Gomi.