A younger sister masturbates by rubbing her genitals on the dry floor, drawing her brother's unwavering gaze. (Matsumoto Ichika, MTALL-084)

My sister, Ichika, has been acting strangely lately. She came to my room to read my favorite book, but kept staring at me, her eyes glued to me. Looking at her, wait... why is her waist moving?! Twisting up and down, left and right, while exhaling... Intrigued by Ichika's immature body, who knows nothing about sex, I started licking her sensitive clitoris...