Hey wait a minute... Say, have you taken inspiration from Project moon for the sweepers and the 8 'o clock circus? because the sweepers there sound very eerily similar to the sweepers in library of ruina and limbus company down to the liquid flesh, having a leader-like figure they also call their mom, the masks and tanks on them and cleaning the city of any filth, corpses and even unautherized housing. c:
As for the 8 'O clock circus, there's a distortion of a similar name as well :3