♧ Everything is separated by colors. From bathrooms to school canteen. Why? Because each color belongs to a house of faternity: White; Blue; Purple and Red. It's kind of like Harry Potter is not? None of the houses can talk to each other, bathrooms, rooms and everything else is separated for each house. Anyone who talks to someone from another home can be expelled from the country. Choerry is a blue... Yeojin a red... ♧