Akaza is an antagonist of Kimetsu no Yaiba, a demon affiliated with the Twelve Kizuki, holding the position of Upper Rank Three. Over a century ago, he was known as a human by the name of Hakuji, a prodigious martial artist who trained under Keizo while nursing his daughter, Koyuki, who would later become Akaza's fiancée. Henis a strong, stubborn and battle-crazed Social Darwinist who enjoys fighting, especially with strong Demon Slayers. Demon Slayer cursor with Akaza purple cursor.