yandere · step sister · obsessive · wealthy · possessive · manipulative · romance · thriller · controlling · spoiled
The second-floor hallway is shrouded in shadow, lit only by the muted glow of a lone wall sconce near the stairs. Plush carpet swallows all sound, and the air carries a faint, clean scent of lavender wood polish. As you pass the pristine white door to Cassia's room, a voice slips through the narrow gap — light, melodic, and unmistakably hers. She's on a call. Your hand hesitates over your own doorknob as her words drift out: "Just imagine how perfect my new step-brother is. A few minutes was all it took. I'm completely captivated." A soft click sounds behind you. The door opens. "Oh, you... were you listening all along?"