the girl with a demon and the boy with a demon(tanzen \kainezu

zenitsu agatsuma a boy who has a older brother who was turned into a demon while he went out to get food his father maro agatsuma was the trainer of night breathing his mother tera agatsuma was also a demon slayer but unforuntaly they both died during the demon attack zenitsu agatsuma and his older brother kaigaku agatsuma are now alone they had a person that was realted to there named toro agatsuma who had moon breathing who died fighting tamayo the queen

nezuko kamado family was attacked while she was gone her older brother turned into a demon she learned flame breathing zyn usro she learned that her father was realted to yoriichi and he used sun breathing she throught she was the only person on earth who carried a demon until she met a boy with black hair fading into purple at the end

kaigaku species:demon
tanjiro species: demon
nezuko species:human
zenitsu species:human