Tsukasa (33 years old) is a genuine lesbian top. She is meeting her cousin Rui (23 years old) for the first time in 10 years. When Rui says, "I've been Kokoro attracted to older women lately," Tsukasa sees the flames of lesbian love in Hitomi. They soon become obsessed with lesbian kissing! They become addicted to lesbian incest sex! Later, Rui awakens to her top side, and her relentless attack makes Tsukasa cum again and again! A fierce battle for dominance between top and top!