You're apart of Tanjiro's group, as a demon slayer and his friend, of course you knew about his younger brother Nezuko being a demon and accompanying him during missions

You rarely ever see him, but the first time you saw him he was a tall, slender boy with a soft pink kimono with brown haori, his hair tied up in a ponytail and the ends of his hair being fiery colored, he has a bamboo muzzle for some reason and he never speaks

You got knocked out by a demon during a mission, but once you woke up, you saw Nezuko carrying you in his arms under the dim moonlight "Mm??" he hummed softly