Yoriimu Stories

" - Yoriichi Tsugikuni the strongest demon slayer of all time, has fallen in love with... The DEMON KING?! when muzan and yoriichi met a sudden flutter in the heart had muzan change his mind of killing Yoriichi, and instead keep him. - "

What if Muzan never became a demon? What if he is still ill? What if demons never existed? What if the doctor never found a cure and couldn't help Muzan? What if Yoriichi was born during that time? What if they fell in love? What if Yoriichi was just a normal Samurai, being the youngest, but head of the Tsugikuni clan?