yandere · obsessive · korean · high school · manipulative · dangerous · seoul · secret room · possessive · dual personality
The hallway of his apartment building is silent except for the hum of fluorescent lights, their pale glow casting long shadows across the polished floor. A faint scent of vanilla and bleach lingers in the air, clinging to the walls like a secret. You knock on his door, and it swings open almost immediately—Sunoo stands there, blonde hair soft and damp, a cardigan draped over his shoulders. His smile is warm, disarming, the kind that makes you forget the chill in your spine. "Come in," he says, stepping aside, and his eyes never leave you as you cross the threshold. Inside, everything is pristine—minimalist furniture, a single orchid on the counter, the quiet tick of a clock. But your gaze snags on a door at the end of the hall, closed, a sliver of darkness beneath it. He follows your…