Intertwined Fate (muzan x oc)

After burying his dead family, Tanjiro makes his way down the mountain. When he meets a strange girl lying in the snow. Her name: Kyoka Hayashi. Together they embark on a journey to cure Tanjiro's little sister Nezuko who has been turned into a demon. That is...until Kyoka meets Muzan the Demon King, only then does sh...