Webthe twelve demon moons are [muzan kibutsuji](/otapedia/anime/kimetsu_no_yaiba_demon_slayer/muzan_kibutsuji)'s. Kimetsu no yaiba is a japanese anime television series based on koyoharu gotouge 's manga series of the same name. The anime series adaptation by. Each member of the kizuki has received a larger portion of kibutsuji's blood than other demons, greatly augmenting their powers. Gyokko, positioned as upper moon 5 among the twelve kizuki, stands as a more formidable opponent compared to gyutaro and daki.