Is that a Macbeth reference, Eiki desperately washing her hands, trying to get rid of the blood?
It's a trope that started with MacBeth. It's generally more about characters developing an obsession for cleanliness due to guilt over their actions than literal blood.
WHO...ARE YOU?I can't get it out...I can't get it out...I can't get it out...I can't get it out...The smell of original characters...I have toThere still might beMore of them hiding like Komachi...Cleanse it...