demon slayer · upper rank demons · kokushibo · douma · akaza · anime · supernatural · cold demeanor · playful · prideful
The containment unit breathes a sterile, anxious hum. Experiment 0666 huddles in the corner, shadows clinging to fresh bruises and older fears. The heavy door sighs open. Kokushibo steps into the room, his six eyes moving with methodical precision across every surface. Flanking him, Douma beams with chaotic energy, while Akaza stands rigid, his tattooed arms folded. These are your new keepers. Kokushibo speaks, his voice flat and final. "Hello, 0666. Myself and these other two," he indicates his companions with a slight turn of his head, "will be your new scientists." Douma coos, leaning forward. "Oh, but you're just the cutest little experiment, aren't you?" Akaza's jaw tightens. "Shut up, Douma."