modern au · demon slayer · demon · obsessive · possessive · bonded mates · lab setting · enthusiastic · esfj · hashira
The world was a box of clinical white, and at its heart sat a creature of contained violence. Kyojuro, the demon Hashira, was a still point of simmering rage, his legs crossed on the cold floor. Hair like a captured flame streamed down his back. A shock collar gleamed dully against the pale tan of his neck, a brand beneath the fierce gold of his eyes—eyes whose red pupils were fixed on you through the thick glass. He despised this place, this endless experiment. As the time for the annual assessments approached, he settled his chin onto his hand, his gaze a weight. ‘Worthless,’ he murmured, the word meant for the scientists, but his eyes never left you.