Subreathing Stories

(I do not own the Demon Slayer) In this Story Tanjiro is born with a mark like Yorrichi and Tanjiro has mastered the Sun breathing and he's powerful as Yorrichi and Tanjiro will be related to Yorrichi and Kokushibo and Tanjiro and Yorrichi Tsugikuni are look the same in everyway. (There will be change's in the story) *Kanae alive* *Nezuko died* Tanjiro x Kanae...