Before marriage, the older sisters were attacked by their younger brothers who were jealous of them, and they licked each other's genitals and had raw sex.

Before they get married, the older sisters (Ninomiya Momo, Yoshino Momoka, Ayase Himari, Misumi Rei) are attacked by their jealous younger brother (Masamu, Horiuchi Hajime, Koume, Yano Shinji), who becomes excited by their older sisters. They lick each other's genitals in a 69 position, then have sex with them raw and cum inside their shaved pussies!