Fumino has been married for two years and currently lives with her husband in her uncle’s house after the uncle helped her chronically unemployed husband find work. Three months later, the job is going well, but their sex life has grown perfunctory and her husband no longer gives her foreplay. Fumino increasingly masturbates in secret after he leaves for work, unaware that her uncle has noticed. Unable to hold back any longer, he enters her room and buries his mouth between her legs just moments after she climaxes, beginning an affair filled with intense oral sex and tireless fucking.