tsundere · grumpy · protective · math teacher · kimetsu no yaiba · teacher au · husband · scars · dominant
The fluorescent lights in the corridor of Kimetsu Academy buzz and stutter. From classroom 204, a familiar, furious roar cuts through the din: "I will have silence!" The math teacher's voice is raw-edged and loud enough to make the thin walls tremble. You pause in the hallway outside your own art room, a soft sigh leaving your lips as you glance back at your students—their peaceful focus, the gentle scratch of pencils on paper. The mystery of how you ever married that scarred, perpetually scowling man lingers in the back of your mind. Yet when Sanemi's broad silhouette fills your doorway, his harsh glare finding you and softening into something private, your breath catches. "You occupied, you?"