I'll Always Fight For You

What if Sabito wasn't dead?? What if instead of Tanjiro and Nezuko it was Giyuu and Sabito?? Welp, I'm here to write a fanfic about what I think would happen. I saw an au on it on instagram and I started looking for fanfics of them. I couldn't find any and the ones I did find I didn't really like, so.... I decided to...