ROYD-064 My usually dull and unfashionable sister suddenly got enthusiastic and showed off her figure, but I lost control and ended up having unprotected sex with her. Hatsukawa Minami.

My plain sister, who has been single for over five years, finally met someone she likes and started trying to act more like a woman! She eagerly bought a one-piece dress & T-back to show off, but the lines of her chest and ass were emphasized too much, making my erection impossible to calm down! Before I knew it, I lost control and groped my sister's body, forcibly inserting my dick & cumming inside her! From that day on, my sister unleashed her long-forgotten sex drive on me, begging for my dick over and over again!