[Shijima Yukio] Teasing Big Sis 1 - Sorrow (Inkou)

A vulnerable sister lies asleep on a tatami floor, her ample breasts exposed as a mischievous brother sneaks in, intent on teasing her until she awakens. He manipulates her defenses, escalating the tension into an intense, forbidden encounter that blends erotic fantasies with raw sibling rivalry. The climax erupts into a double‑penetration scene that leaves both siblings breathless and conflicted.