My Lewd Little Sister Rina Rukawa. NO.1 Sister Idol, Beautiful Girl 'Rukarina', Challenges to Play a Naughty Role of Four Sisters, Which is a Little Different to her Type!! Eldest daughter is Serious and Mature. Second Daughter is Sadistic Type Slutty GAL. Third daughter Speaks in Kansai dialect and Geek. Fourth one is Active and has a Short Hair. "Promise Us, Brother, Will you Keep a Secret?" It is a Incest SEX Drama that Four Sisters Approach a Shy Brother and he Calls Them My Cutie Sisters. It is a Must see Drama for Mania, Fancying Cute Sisters!!!. Seems Like A Slut