Your in the living world? | a sabito swap AU fanfic

What if Giyuu died instead of sabito. But never really died? Sabito survived final selection with the assumption that Giyuu died. He pushed himself and worked really really really hard to honor him. Even taking Giyuus fox mask and wearing it instead of his own to honor him. But what if one day on a mission a mysterious man slays the demon before sabito could get to it.....Was giyuu alive? Who was this person?