Webtanjiro becomes a demon in chapter 201 of the demon slayer manga after his battle with muzan. Becoming a demon is relatively easy in the series, with muzan. Webthe train arc showcases tanjiros growth where, with the help of inosuke is able to take down enmu, so we can say that he's about the level of the strongest lower moons. Webthis shocking event happens in chapter 203, voices of encouragement. Muzan does this to survive, as tanjiro can withstand sunlight. Webblood loss and shock in that case are serious no matter how strong you are. The wound that killed iguro was probably getting chomped on by muzan when he split his body. Webtanjiro analyzes akaza's movements until he finds a perfect moment to strike, using hinokami kagura to cut off his head successfully. Though the fight persists. In the final sunrise countdown arc of the demon slayer manga, tanjiro’s brief time as a demon does make him evil. He mindlessly attacks his former hashira. Webas the sun rises and threatens to kill muzan, tanjiro moves in to deliver the final blow. However, he is fatally wounded. Webthe demon slayer’s fanbook finally revealed tanjiro's rank at the start of the infinite castle arc, showing that tanjiro, zenitsu, and inosuke managed to reach the. Webwith muzan seemingly dead and gone, it is assumed tanjiro voids the curse that has been plaguing him and all who awaken the demon slayer mark. Webdemon slayer's manga ending reveals the ultimate fates of tanjiro and nezuko, although some reading between the lines is necessary to get it all.
