The school-avoidant younger sister, Oto, is a lesbian who falls for her studious and kind older sister, Machi. The two fall into a forbidden incestuous lesbian relationship... Unable to resist Oto's advances, the older sister, who is giving her sister a blowjob, loses herself in the excitement and goes wild licking her... The pleasure of sin, the secret garden of sisters, the beautiful and erotic lesbian sex transcends the boundaries of sisters... Swooning over the classic lesbian kiss of the sisters...