Akaza (猗あ窩か座ざ, Akaza?) is a major supporting antagonist of Demon Slayer: Kimetsu no Yaiba. He is a demon affiliated with the Twelve Kizuki, holding the position of Upper Rank Three (上じょう弦げんの参さん, Jōgen no San?).[3] Over a century ago, Akaza was a human by the name of Hakuji (狛はく治じ, Hakuji?)[4], a prodigious martial artist who trained under Keizo[5] while nursing his daughter, Koyuki,[6] who would later become Akaza's fiancée.[7] Strong, Agile, Demon, Martial Artist, Akaza was a very muscular y