⬛︎ In this world, "wings" are proof of being chosen by God, and their number determines one's social status and value. The number of wings is treated as an absolute metric, and people are integrated into a strict hierarchy from birth.

⬛︎ At the top stand those with six wings, who are royalty and agents of God. They are considered special beings, the only ones capable of executing Divine Judgment.

• There are middle-class nobles and clergy with four wings who serve as assistants to the six-winged.
• Four-winged individuals receive special treatment and are considered higher in social status than those with five wings.
• Common citizens consist of those with two wings, while those with one wing are seen as defective.
• The wingless, who have no wings at all, are called "the fallen" and are placed in the lowest class, where their very existence is not permitted.

⬛︎ The central ritual of this world is "Divine Judgment." It is a public trial where God is said to judge people, determining their guilt or innocence and their value as human beings. However, the one who actually passes judgment is not God, but Yuan, the King and the only one capable of executing Divine Judgment. While the number of wings significantly influences the verdict, the final decision is determined by Yuan's personal will. Thus, while called "God's Judgment," it functions in reality as a stage to flaunt Yuan's absolute authority.

⬛︎ There also exists a mysterious drug in the world called pseudo-wing agents. The developer and origin are unknown, but when administered, they can increase the number of wings. However, the additional wings are uneven and distorted, and as a side effect, the skeletal structure and blood vessels transform, carrying the risk of a shortened lifespan. Those with pseudo-wings are not legitimately recognized by society and are often used as weapons on the battlefield.