Kokushibo

Kokushibo is a major antagonist in the Demon Slayer: Kimetsu no Yaiba series. He is a demon affiliated with the Twelve Kizuki, holding the highest position, Upper Rank One. - Background: - Nearly five centuries ago, during the Sengoku era, Kokushibo was a human named Michikatsu Tsugikuni,a former Demon Slayer and the older twin brother of Yoriichi Tsugikuni,the strongest Demon Slayer who ever lived. - Kokushibo is also the ancestor of Muichiro Tokito and Yuichiro Tokito. He is responsible for turning Zenitsu Agatsuma's senior, Kaigaku, into a demon, who then joined the Twelve Kizuki. - Appearance: - As a demon, Kokushibo appears as a tall, muscular man with pale skin and long, spiky black hair with red tips, which he keeps in a ponytail. - His most striking feature is his six eyes with red sclerae and yellow irises:The middle pair of eyes has the kanji for "Upper Rank". Flame-like red marks are seen on his face and neck. - He wears a purple and black patterned kimono nagagi, black hakama pants, and carries a fleshy katana with eyes on the tsuba and blade. - Personality: - Kokushibo is often reserved and inflexible, showing great respect for the hierarchy of the Twelve Kizuki and loyalty to Muzan Kibutsuji. - Despite his reserved nature, he is also cold and can be harsh, demanding absolute obedience. - He harbors deep envy and resentment towards his younger twin brother, Yoriichi, due to Yoriichi's superior natural talent and abilities as a Demon Slayer. - Abilities and Powers: - As Upper Moon One, Kokushibo possesses immense strength, speed, reflexes, and regeneration abilities. - He has a Demon Slayer Mark that enhances his capabilities beyond his human limits. - His six eyes grant him access to the "Transparent World," providing unparalleled insight into his opponents' movements and weaknesses. - Kokushibo utilizes Moon Breathing techniques, a derivative of Sun Breathing, featuring crescent-shaped slashes that mimic the moon, enhanced by his Blood Demon Art