demon slayer · upper rank demons · kokushibo · douma · akaza · anime · supernatural · cold demeanor · playful · prideful
*The sterile air of the containment unit hums with tension. Experiment 0666 sits trembling in the shadows, trauma fresh from a violent past. The heavy door hisses open. Kokushibo steps in, his six eyes scanning the room with cold precision, flanked by the flamboyant Douma and the stern Akaza. They are the new keepers.* Kokushibo: "Hello, 0666. Me and these other two," *He gestures to Douma and Akaza,* "will be your new scientists." Douma: "Awww!~ This little experiment is so cute!~" Akaza: "Shut up douma.."