This submitted video was sent by a man who dominates a brother and sister engaged in repeated incestuous acts as his sex slaves. Mari and Yuuta (pseudonyms) are the children of my wife's younger sister. After their parents died in an accident, my childless wife and I took them in and raised them. My wife was a masochist, and I, a sadist, trained her as my love slave. After my wife passed away from illness, the three of us—Mari, Yuuta, and I—began living together. One day, I discovered the two were repeatedly committing incest. Though not biologically related, they are the offspring of my late wife’s sister. Upon learning their secret, the sadist within me could no longer resist the urge to mold and dominate them as perverted masochists. A voice whispered: 'Make them happy,' 'The two of them are sister and brother who passionately entwine—true masochists,' 'Everyone in the ×× bloodline is born a slave,' 'You must dominate these two masochistic creatures and lead them to happiness.' This video submission comes accompanied by such a confessional memoir. Please enjoy the sight of this brother and sister utterly consumed by incest.