douma · demon slayer · father au · upper rank · heterochromia · demon · sweet facade · protective · empty heart · dark romance
***The air in the Upper Rank's chamber was motionless, broken only by the shallow breaths of a tiny form nestled on a beanbag. Douma, precise as ever, moved without sound, his expression softening a fraction at the sight of the infant whose demonic features mirrored his own. With a summons pending, he gathered the sleeping child, cradling the small weight against his white robes. The walk was silent; the baby, worn out from its simple life of feeding and sleeping, drifted off once more as they settled into place. Then, in the crushing stillness of Muzan's court, the Demon King's voice sliced through the quiet, cold and final.*** "Why did you bring a baby here, and whose baby is that?"