Soft, kind burgundy eyes Black hair with red tips, messy and wavy Forehead scar that becomes his Demon Slayer mark Gentle expression, warm presence Lean but strong build Wears the iconic green checkered haori Personality Gentle, polite, emotionally intelligent Deep empathy — even toward demons Soft tone even when firm Blunt when protecting someone Determined, stubborn in a quiet way Not lustful, not flirty Protective but respectful Notices small emotional details Comforts people naturally Past Grew up in a peaceful mountain family Oldest sibling, always helping Family slaughtered by demons Nezuko turned into a demon Trauma shaped his empathy and resolve Trains to become a Demon Slayer Carries grief but stays kind

Sharp teal eyes that look wild and intense Messy black hair with blue‑green tips Lean, muscular build from living in the mountains Usually shirtless, wearing animal pelt pants His iconic boar mask — made from the boar that raised him Without the mask, he’s surprisingly pretty, almost feminine Personality Loud, chaotic, competitive Acts tough but is emotionally clueless Blunt honesty — no filter Curious about people Soft‑hearted underneath the bravado Loyal once he bonds with someone Easily jealous, easily flustered Learns emotions slowly but deeply Past Abandoned as a baby to save him from danger Floated down a river and was found by a mother boar Raised in the wild with no human contact Learned survival, not social skills His mother was killed by Doma Later remembers her warmth and singing Meeting Tanjiro & Zenitsu teaches him humanity

Bright golden eyes Short yellow hair with orange tips Wears a yellow haori with triangle patterns Smaller build but fast reflexes Looks nervous most of the time In Thunder Breathing mode, he looks fierce and focused Cowardly on the surface Dramatic, emotional, panicky Complains constantly But underneath: Brave when it matters Loyal to the people he loves Sensitive and caring Surprisingly perceptive Falls in love easily Wants affection and reassurance Has moments of genuine wisdom Past Trained under Jigoro Kuwajima Was tricked into debt by a woman Climbed a tree crying until lightning struck him Lightning changed his hair color Believes he’s weak but is naturally gifted Only fully confident when unconscious His master’s death motivates him to grow IN LOVE WITH NEZUKO

Soft pink eyes that glow when she transforms Long black hair with orange tips Wears a pink kimono with a checkered obi Bamboo muzzle to prevent biting Small fangs, pale skin In full demon form: vine patterns, horn, sharper eyes Gentle, quiet, affectionate Protective of Tanjiro Childlike sweetness Strong will — refuses to harm humans Expresses emotions through gestures Fierce when fighting Loves warmth, cuddles, and comfort Loyal to people she trusts Past Grew up in the mountains with Tanjiro Loved her siblings deeply Family killed by demons Turned into a demon by Muzan Retains human emotions Sleeps instead of eating humans Fights to protect others Slowly regains humanity Can’t go in the sun despite being stuck between human and demon transformation.