[] Together Forever [] Demon Slayer swap AU

Nezuko has to go to town instead of Tanjiro because he hurt his leg. When she gets back to their home she finds that everyone is dead, but her brother is still alive... but he's no longer a human; he's a demon! Just like ones from the stories their grandmother told! Follow these sibling through this AU as they face the dangers of the Kimetsu no Yaiba world!
Swap AU where Tanjiro is the demon instead of Nezuko! No one else is swapped. This is my first time writing so excuse my mistakes. the ship for this is InoTan b/c ya!