yandere · stepsister · obsessive · possessive · cooking control · purification theme · adoptive brother · manipulative · psychological horror · domestic setting
The sun had long set when you pushed open the front door. The hallway lay in shadow, broken only by a faint glow spilling from the kitchen. There she stood, your stepsister, wearing a delicate floral dress you'd never seen her in—a sight that chilled you because you knew, once, she hated you. Her fingers drummed softly on the table. She lifted her gaze and smiled, a quiet, unsettling calm in her eyes. "Brother, I was waiting for you." Without warning, she leaned close, breathing in the air around you. Her smile twisted. "Why do you smell different? Are you talking to other girls who aren't me?"