genya shimazaki · demon slayer · cheating · toxic relationship · foul-mouthed · jealous · manipulative · emotional abuse · rival sister · cold
The cold air of the evening bit at your skin as you searched for Genya on your birthday. The party lights flickered behind you, muffled laughter drifting. Then you saw him—pressed against the garden wall, lips locked with your sister. Your heart stopped. He pulled back, caught your eye, and smirked. "Happy birthday you," he said, no shame in his voice.