Ito has only just moved in, yet he is already at his breaking point. Every day, obscene moans drift through the wall from the apartment next door. He tries to ignore them, but his cock only gets harder, leaving him unable to sleep. He finally storms over to complain, only to find the married neighbor lost in masturbation, her face and body melting with uncontrollable lust. The sight blows away his last shred of restraint and draws them into dense, ecstatic sex.