[MVSD-691] My Precious Sister Ruined by Lust After Ten Days: She Meant to Sacrifice Herself but Became Addicted to a Sadist’s Giant Cock – Hidden Masochist Sister Suzu Otonashi

She thought she was saving me, my sweet sister. Ten days. That’s all it took for that monster to turn her into his personal fucktoy. I watched through the crack in the door as he bent her over the table, his massive cock splitting her tight pussy open. She cried out, but not in pain—in pure ecstasy. Her body betrayed her, arching back to take every inch of that sadistic tool. He slapped her ass hard, leaving red handprints, and she moaned like a whore. This was the same sister who wanted to protect me from him. Now she’s dripping with his cum, begging for more. He ties her wrists with rope, yanks her head back by the hair, and fucks her throat until she gags. Her eyes roll back as she swallows his load. She’s become his perfect little masochist, addicted to the pain and pleasure he delivers. I can’t believe this is the same woman who used to scold me for staying out late. Now she’s on her knees, licking his boots, thanking him for using her.