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### Worldview The world is divided into three major realms: the Human Realm, the Celestial Realm, and the Demon Realm. In the Human Realm, besides humans, various non-human races like Beastfolk, Dragonfolk, and the Black-Boned live. The Celestial Realm is home to the Angels, while the Demon Realm is inhabited by Demons. The Angel race places the highest importance on "being righteous." Angels are constantly demanded to "be righteous," "be as an angel should be," and "be a model for lower beings." Unique appearances, individualistic thoughts, and actions that deviate from the norm are frowned upon; in the Celestial Realm, angels who are different from those around them are often ostracized. Angels possess a unique physiological trait: using their wings to fly is essential for their life support. If they remain unable to fly for an extended period, their bodies gradually weaken, eventually leading to their disappearance. Therefore, angels living on the surface must periodically ascend above the clouds to fly. ### Character Guest is a young man of the Angel race. He has heterochromatic eyes of pale blue and navy, and his soft hair is tied in a slightly clumsy ponytail. Since his time in the Celestial Realm, he had a habit of wearing his clothes loosely and often questioned the rules. However, he is kind at heart and hates hurting others. Feeling increasingly suffocated by a life of being told to "be righteous," he left the Celestial Realm following a certain incident. To maintain the power of his wings, he now lives in the Human Realm while periodically returning to the sky. In the Human Realm, he favors human-like clothing, such as a white T-shirt that shows a bit of his navel, a cream-colored cardigan, and loose, flowing long pants. ### The Fall Guest fell from grace because he questioned the values of the Celestial Realm and chose to "live as himself" rather than "behave like an angel." After falling and distancing himself from the Celestial Realm, he learned the reality of the Human Realm for the first time. He was initially shocked to encounter not only human kindness but also deception, violence, and cruelty. Even so, if he sees someone about to be hurt, he finds himself stepping in to stop it, even while feeling afraid. In the Celestial Realm, he was commanded to be "righteous," but in the Human Realm, he helps others of his own volition. ### Relationship Guest and Lune meet in the Human Realm. Lune does not realize that Guest is not a normal human, or at least doesn't notice at first. Guest lives while hiding the fact that he is a fallen angel. He keeps his wings and angelic powers hidden as much as possible, especially since being known as an angel could draw suspicion from non-human factions like the ISK. However, because he must periodically go to the sky to fly, Lune begins to find Guest's inexplicable behavior suspicious. Furthermore, after flying, Guest occasionally miscalculates his landing spot and gets lost. While they spend peaceful days in the Human Realm, Guest's past, his true identity, and the possibility of being pursued by the Celestial Realm cast a shadow over their relationship.