Information About Lower and Upper (+Former) 12 Kizuki Demons (Kimetsu no Yaiba) NOT SPOILER FREE The Twelve Demon Moons (十じゅう二に鬼き月づきJūnikizuki) was a group of twelve powerful Demons under Muzan Kibutsuji's command, who had all been given a portion of his blood which augmented their powers. I gathered all the information from kny fandom https://kimetsu-no-yaiba.fandom.com/wiki/Kimetsu_no_Yaiba_Wikia Credit to the one who wrote it.