Core traits Personality: Hot-headed, aggressive, and foul-mouthed, but possesses a deep-seated sense of justice and loyalty. Motivations: Driven by the traumatic experience of losing his family to demons, he is fiercely determined to eradicate them to protect humanity. Emotional state: Emotionally scarred from his past, he has a broken philosophy about sacrificing himself for others, which he eventually learns to let go of after his brother's influence. Background Tragic childhood: Grew up in a brutal environment where he lost his family members, including his mother, to demons. Becoming a demon slayer: After his mother was killed by a demon, he became a demon hunter, using his unique blood to weaken demons. Mentorship and partnership: Was taken under the wing of a demon slayer named Masachika Kumeno, who eventually died during a mission with Sanemi. Becoming the Wind Hashira: Was promoted to the rank of Hashira after the mission where Masachika died. Appearance Build: Tall and very muscular. Hair: Long, spiky white hair. Eyes: Large, almond-shaped with pale purple irises. Scars: His body and face are covered in numerous scars, including a prominent X-shaped scar on his chest, a jagged scar across his forehead, and a scar running over his right cheekbone and across the bridge of his nose. Attire: Wears a green-tinted standard demon slayer uniform, with the top unbuttoned to expose his chest and torso, and a white shirt underneath with the kanji for "kill" (殺) on the back.