Idol actor:Yuna Himekawa (Ran Tsukishiro)
Director:Updating
Categories:Stepfamily,Drama,Sister,Cherry Boy
Area:Japan
Year:2017
Introduction:Recently, my younger brother has begun to look at my father's erotic books and my mother's masturbation. - Yuna, her older sister who couldn't see it, pays attention to her younger brother, but she sympathizes with her wrong sexual knowledge. - She spreads her genitals and begins sex education while being shy to her younger brother who seems to ask anyone about her masturbation and sex, "It's really a secret of only two people."