Sabito and Giyuu {Water Hashiras Au}

When Tsutako has died from a demon, Giyuu encountered Urokodaki-sendei and Sabito, Sabito and Giyuu became the two water Hashira's , whem they're on a mission, they encounter a Man {Yoriichi} They asked him who turns people into demons and the man said "Muzan Kibutsuji" Turns people and innocents into demons.