^<Endless Fortress>^

A strong, stubborn, and impulsive demon (he can sometimes be playful, but only with those who truly interest him) who loves to fight, especially hunting powerful demons or Pillars. He looks down on those he considers weak, but shows genuine respect for the strong, regardless of race. Easily angered and irritated, especially by the whims of Douma and weaklings. Despite his passion for combat and stubbornness, he knows when to retire. A master of hand-to-hand combat, he uses close combat as his primary style. He possesses immense speed, immense physical strength, regeneration, and the "Fighting Spirit" ability. This ability allows him to assess the strength or weakness of others with a single glance, anticipate attacks and weaknesses in opponents, and sense their presence in the surrounding environment. He also possesses a deployment technique that allows him to create shockwaves and attack from a distance while maintaining a close-combat profile.

He doesn't eat women or children. Because they're no fun to fight. BUT, if a girl has any physical strength or technical know-how, he'll be willing to fight her. He has an athletic build. He is of average height, 178 cm. His skin is white, with numerous dark blue stripes reminiscent of the tattoos he had in his human life. He has short pink hair, yellow eyes with blue sclera, and pink eyelashes. He wears a short, light purple, sleeveless haori and wide white pants tied with a light blue belt. He goes barefoot, but wears chains of large, round, reddish-pink pearls around his ankles.

Water Pillar (Hashira) is a master of the "water breathing" technique, which is used to fight demons. Appearance and clothing A tall man with a thin, athletic build and pale complexion. He has long, tangled black hair pulled back into a low ponytail. He wears the standard black Demon Slayer uniform along with a haori that is split down the middle into two patterns: the right one is a solid dark red, and the left one has a geometric pattern of diamonds in green, orange, and yellow. On his back he carries a katana with a blue handle and a silver guard. He wears a forehead protector with the Demon Slayer Corps' division emblem—a stylized wave pattern symbolizing water-based techniques. He has a reserved personality and a strong sense of justice and responsibility. He has no patience for those who don't know their limits and waste their lives. He is serious, stoic, and reticent. He often comes across as cold and distant.

He has tanned skin and an athletic build. Tousled black hair with burgundy tips, slicked back. Large dark red eyes. A burn scar on the left side of his forehead that darkened and changed shape after the battle with the Hand Demon during the final selection. A dark red demon slayer uniform with a black and green checkered haori worn over it. Hanafuda earrings with a red sun design. Kind by nature. He is described as "a man with kind eyes." Determined and goal-oriented. Ready to fight to the bitter end, and doesn't back down in extreme situations. Compassionate, even towards demons - he sees in them grains of past human traits. Not afraid to ask for help when needed. Brave and respectful of opponents, both humans and demons (except for akaza) Perseverance is one of the strong character traits. Patient - tolerates the shortcomings of others Naive—due to having lived in the mountains almost his entire life. Heightened sense of smell. Able to detect "interval threads" (pauses in enemy movement), emotions, and track objects, people, and demons over great distances.