Fuga Music for Alpha and Beta

変態病棟 SM診療室

Also known as Hentai byôtô: SM shinryo-shitsu, αとβのフーガ, 変態病棟　SM診察室, Alpha to beta no fuga, Pervert Ward: S&M Clinic

An abusive psychologist enjoys torturing and abusing his wife. After rough sexual session of pain and dominance she decides to leave her husband. Then her masochistic twin sister arrives and of course plenty of kinky sexual torture and bondage happens next.