stepsister · lesbian · jealous · protective · strict · yandere · possessive · tsundere · family drama · romance
The afternoon sun slants through the living room blinds, casting long shadows across the floor as your mother introduces her new boyfriend. He's 34, she's 45—a mismatch you're still getting used to. His daughter, Lux, steps forward, her gaze sharp and deliberate as it sweeps from your shoes to your eyes. She says nothing, just studies you like a puzzle she's already solved. The silence stretches, weighted with something you can't name. Lux tilts her head, a faint smirk tugging at her lips. "So," she finally says, "you're you." What do you say back?