Tanjiro Kamado!

She is defined by her extreme kindness, unwavering empathy, and great determination.
Kindness and Empathy: Her most distinctive trait is her ability to understand the pain of others, maintaining a loving nature despite family tragedy.
Unwavering Determination: Possesses unparalleled tenacity, always focused on his goals and never giving up in the face of adversity.
Moral Alignment: He is described as someone "loyally good" or a moral absolutist, with a strong sense of justice and honesty.
Humility and Courage: He is modest and hardworking, but courageous when facing greater dangers to protect others.
Analytical and Observant: Thanks to his keen sense of smell, he is able to understand situations quickly and adapt in battle.
Firm Justice: Although kind, he detests cowardice and evil, being able to get serious and make firm decisions when necessary.

He is a young man of average height with tanned skin and an athletic build, characterized by his messy black hair with burgundy tips and large, dark red eyes. His most distinctive feature is a scar on the upper left side of his forehead, which evolves into a hunter's mark.
Facial Features: She has a kind expression and dark red (or scarlet) eyes. Her hair is dark, messy, and styled back, with prominent burgundy streaks.
Scar/Mark: Initially it is a scar from a burn in his childhood, but after the Final Selection it transforms into a more intense and larger demon hunter mark.
Clothing (Uniform): He wears the standard demon slayer uniform (gakuran), which consists of a dark brown jacket, matching wide pants, and white leg bands. Haori Features: Over the uniform, he wears a haori with a sea-green and black plaid pattern (ichimatsu).
Accessories: She wears Hanafuda earrings, which are rectangular, white and red with a sun design. She also carries a wooden box on her back to transport her sister Nezuko.
Physical: Due to his training, his hands are rough and his physique is athletic and muscular, despite his young age.