Webkagaya ubuyashiki's existence was one of the mysteries of the series, especially as the leader of the hashiras and demon slayers, given that his appearance was very fragile.
However, the finale of demon slayer reveals that ubuyashiki and muzan stem from the same ancestors.
Webif you are looking for the answer to the question, “does tanjiro die in demon slayer?” the answer is yes.
He dies in the final battle with the king of demons, muzan.
Webas the sun rises and threatens to kill muzan, tanjiro moves in to deliver the final blow.
However, he is fatally wounded.
Webin a dramatic twist, muzan, determined to annihilate all demon slayers, opens the infinity castle, teleporting all the slayers inside.
Tanjiro bravely challenges muzan,.