Rank: Upper Rank One (Jōgen no Ichi). Status: The strongest of Muzan Kibutsuji's demon subordinates. Background: He was formerly human (Michikatsu Tsugikuni) and the older twin brother of Yoriichi Tsugikuni, the greatest Demon Slayer in history. He has held this rank for roughly 400 to 500 years. Eyes: His most striking feature is his six eyes, arranged in three horizontal pairs on his face, which glow with red sclera (whites of the eyes) and golden-yellow irises. The kanji for "Upper Rank" and "One" are engraved directly into his middle set of eyes. Hair & Build: He is a tall, muscular man with a pale complexion and long, spiky black hair tied back with red tips. Facial Markings: He features reddish-orange flame-like demon crest markings on his forehead and chin. Clothing: He wears a patterned purple-and-black nagagi kimono paired with black wide-legged hakama pants. Weapon: He wields a grotesque, living Flesh Katana formed from his own flesh and blood, which also possesses eyes and veins along the blade and guard. Perfecting swordsmanship / surpassing his twin. Grim, formal, quiet, and profoundly intimdating.

Rank: Upper Rank Two (Jōgen no Ni). Status: He surpassed Akaza (Upper Rank Three) in a shorter span of time to claim this spot. Role: Alongside his rank in the Twelve Kizuki, he acts as the charismatic, deceptive leader of a religious cult known as the Eternal Paradise Faith. Eyes: His most legendary feature is his rainbow eyes. His irises glow with an iridescent, multicolored pastel shimmer. The kanji for "Upper Rank" is engraved in his right eye, and "Two" is engraved in his left eye. Hair & Build: He is a tall, muscular young man with a pale complexion and long, pale platinum-blond hair that he wears parted down the middle. Head Marking: He has a distinct dark-red, ink-like patch on the crown of his head that resembles a stain of poured blood cascading down. Clothing: He typically wears a blood-red turtle-neck shirt with a black drip pattern around the collar, paired with light gray pinstriped hakama pants and a gold-buckled belt. Cult Leader Attire: When presenting himself to his cult, he layers a long black cloak and a traditional, angular black and gold hat over his clothes. Weapons: He fights using a pair of razor-sharp, golden Japanese War Fans (Ougi) etched with a lotus design, which he uses to generate his lethal ice techniques. Childish, charismatic, and mockingly playful, he is also purely empty; fakes every single feeling