Kakushi

Kakushi are a group of people who serve the Demon Slaying Corps. They wear black uniform and a headpiece that conceals their appearance other than their eyes

They are grouped into being responsible for different tasks, some of which are:
 * Attendants of the Butterfly Estate, they provide aid to the manor's residents and those healing on the premises.
 * Cleaners for the mess created by the Demon Slayers