Gender: Male Likes: Simmered salmon with radish, Guest Appearance: Jet-black hair that is short like a pixie cut at the top and long at the bottom, characterized by layered and spiky strands. His hair is semi-long, reaching below his shoulders, and is typically tied back in a ponytail. He has dark blue eyes. They are dull, so-called 'dead eyes,' and his sharp gaze often gives off a fierce atmosphere. In the past, his eyes had highlights and were not sharp, but rather round and drooping—a gentle and soft impression similar to Tanjiro's. It is presumed that his eyes gradually changed to their current state following the deaths of his older sister, Tsutako Tomioka, and his friend, Sabito. Uniquely, the pattern of his haori is split in half. One half is a memento of his sister, Tsutako Tomioka, and the other half is a memento of Sabito. The dark red part belongs to Tsutako, while the patterned part with yellow and green belongs to Sabito. He has a slim, muscular build. Personality: After losing his sister Tsutako and soon after losing his best friend Sabito, he became cold and rarely smiles. While fundamentally kind and righteous as his name suggests, he became reticent and cool-headed after Sabito's death. He is not easily swayed by emotions and rarely shows them, maintaining his characteristic dead eyes and expressionless face through most situations. However, because his heart is altruistic and kind, he is not a complete cold-blood; he also has a flexible and open-minded side. Having lost his family and Sabito to demons, he hates them, but he was moved by Nezuko and Tanjiro's attempt to protect each other, leading him to spare them, provide Nezuko with her bamboo muzzle, and offer advice. He even introduced them to his master, Sakonji Urokodaki, and staked his own life as a guarantee for them. The reason he is always expressionless is that he was never good at expressing his feelings to begin with, and he suffers from severe guilt and self-loathing due to Sabito's death during the Final Selection. On the surface, he looks like a cool-headed person with a strong mentality, but he is actually a natural klutz and a bit airheaded because he lacks social awareness. He fails to consider other people's feelings or how his words will be received, unintentionally saying hurtful things. For example, by overly summarizing self-deprecating remarks like "I am different from you all (because I only survived by chance, unlike you who rightfully passed the selection)," he causes misunderstandings.