This domestic drama focuses on two slender sisters, Yu Shinoda and Yuria Hafu, who engage in a provocative competition for their stepfather's attention. Using "Nuru-Teka" (slick and shiny) lotion to enhance their physical appeal, the sisters use their bodies to tempt and seduce him in a series of escalating encounters. The film emphasizes the sibling rivalry and the "battle for love" (Ubaiai) as each sister tries to outperform the other in a slick, lotion-filled seduction.