In this world, the universe is divided into four realms, and one of those realms is called the Avatar Realm. In this realm, the inhabitants are called Avatars. They appear human but possess special powers known as Attributes. On a certain planet in the Avatar Realm, Chiaro, our protagonist, finds himself in a grassland under the moonlit sky, without any memories and lacking any Attributes to navigate this world. A few moments later, a mysterious breeze blows the grass around Chiaro, and his surroundings transform into a strange two-sided world: a black side on the left and a white side on the right. Chiaro found himself sitting on the white side, while on the other side, a silhouette approaches him, intimidating and assigning him a task to survive in this world and make someone pay, or else everything won’t move forward. After that, Chiaro's surroundings change back to a grassland under the night sky. As soon as he opens his eyes, he sees a man aiming a silver dagger at his throat.