Okay first of all if tanjiro turned into a demon he would never meet inosuke or zenitsu and zenitsu would still look for a wife and inosuke would still be in side of the kyogai mansion and the sound hashira would be alone and would die by gyutaro,daki,nezuko and tanjiro and sooner or later inosuke and zenitsu would die by demons and tomioka would fight akaza by himself and will die and the snake,love,rock,wind will die by muzan and the mist and the wind hashiras brother will die so all the uppermoons surivive but the some lower moons will die so the demons will win making the demon corps fall so the world will be conquerd by demons
the thing is with this series is that its making tanjiro and the demons very overpowered, making him conquer the sun without even getting the blue daisy
You mean the blue spider lily? Here's some info that my sis gave me (you don't need to read it) The blue spider lily turned muzan into a demon so he thinks if he gets one he'll conquer the sun (although he could be wrong) My sis gave me that info maybe not all of it is correct
ok ok if i were a demon ill protect tanjiro and stop muzan Jackson and it will be hard u will pass spooderfam and the drums house which its loud and defeat upperrank demon daki and his brother which i dont know btw that's im gonna do if im a demon and if ur a demon trust muzami jackson and kill hashira and after muzan jackson maked u uppermoon 1 then fight muzan