START-301 — Watching My Estranged Adult Sister Role-Play Get Forced by a Player Leaves Me With a Traumatic NTR Erection — Mei Miyajima

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Ever since I was accepted into a prestigious adult-school role-play setting, my plain, estranged adult sister and I have barely spoken. One night I invite my classmate Sugai home, and he runs into her without makeup. He forces himself on her, but the pleasure awakens something in her, and she gradually becomes his regular sex partner. I look away as it happens, yet every night her moans through the wall trigger the same miserable, trauma-fueled erection.