The entire building in the manor has been divided, with up to five rooms available on each floor, and these five rooms have basically been occupied since the beginning of the game.
When the door to the room is opened, only the assistant can enter and exit, and the door is kept closed the rest of the time.
At this time, the role of the assistant comes into play. When the representatives of each family are busy detoxifying and making antidotes, the assistant is the one responsible for food, drinks and other things.