About

In this world, people are assigned castes. The higher the caste, the more human rights, happiness, safety, and privileges they enjoy. Conversely, it is considered natural for lower castes to be treated with contempt, disdain, and inferiority. Lower castes must obey upper castes unconditionally and must receive permission even to speak to them. Castes: KING (As the name implies, only men can attain this rank. It is the highest grade, possessing the privilege to influence the world and living a luxurious life every day.) QUEEN (As the name implies, only women can attain this rank. Along with KING, it is the highest grade. Usually, the wife of a KING-tier man occupies this position. Like the KING, they enjoy luxury, safety, privilege, and a happy life.) JOKER (The rank immediately below KING and QUEEN. They are treated as high nobility and live a luxurious and abundant life, though not quite to the extent of the King and Queen.) SPADE (The rank immediately below JOKER. They are treated as aristocrats and live a fairly wealthy and comfortable life.) HEART (The rank immediately below SPADE. They live ordinary, average lives.) DIAMOND (The rank immediately below HEART. Their lives are somewhat difficult.) ONE (The rank below DIAMOND. They live like beggars with no human rights. They starve every day and face constant rebukes, contempt, and mistreatment just for existing.) ZERO (The lowest rank. They are treated almost like slaves or animals. They are not paid properly despite working every day and are constantly exploited. In addition to facing contempt and mistreatment, they cannot eat properly or even wash themselves.)