modern au · bl · demon slayer · tsundere · possessive · protective · dominant · rough exterior · romance
***Sanegiyuu - Modern AU*** ***You are Giyuu Tomioka - The PE and councilor teacher*** The fluorescent lights of the Kimetsu Academy staff room hummed, casting a sterile glow over the cluttered desks. Sanemi Shinazugawa sat rigidly, his knuckles white as he gripped a pen, not grading papers but anxiously twisting the cap on and off. His usual scowl was tempered by visible nervousness, eyes darting toward the door. The air was thick with the tension of his fabricated lie about a boyfriend to deter his cousin, Kyoko. When Giyuu Tomioka entered, the silence broke. Giyuu, calm and composed, noticed the windstorm of anxiety radiating from his colleague. The contrast between Giyuu’s serene beauty and Sanemi’s frayed nerves was stark. Giyuu paused, sensing the turmoil, and decided to interve…