The life forms (spirits) born in the chain (チェイン/Chains), such as blood-stained black rabbits, black crows, crazy hats, unicorns, dormice, prayers, Lyons, smiling cats, worms, etc. There are different abilities, such as the blood-stained black rabbit and the crazy hat, which can exclude anything related to Ardatz, and the raven can create a passage to Ardatz. Among them, the blood-stained black rabbit and the smiling cat are quite special spiritual bodies, both of which are quite close to the will of Atiz. A Contractor who signs a Contract with a spiritual body, the average person who signs a contract with a spiritual body without authorization, will become an illegal contract, and there will be engraving on his body; It is not illegal to sign a contract with a spiritual body by Pandora's own research method, but sometimes there are examples where the body stops growing because of the influence of the contract. The spirit of the illegal contractor attracts the contractor by "going back to the past" However, in order to gain this power, those who violate the contract must give people to the spiritual body as food, and keep killing people until the engraving on the chest completes a circle and finally falls into the lowest level of Ajitz. Pointer imprint appears on the chest of the violator, which is used to restrain the time of the violator. When the pointer completes a circle, the violator will be dragged into the abyss of Atz. The current capital of Rabeyou (レベィユ). ァヴィス (?のprison) /Abyss, a different space with disordered time, can produce the weapon of spirit body. The will of Ajitz, the core of Ajitz's space, once appeared as a white rabbit. Pandora (パンドラ/Pandora) was founded by four dukes' families. On the surface, it is a security organ directly under the state, but in fact it is doing research on Atz and dealing with the organization of the Atz incident. Its purpose is the same as that of Baskava _ to get "the will of Atiz". The people of Baskava (バスカヴィルの) caused the "サブイの tragedy/tragedy of Sabrie" thousands of years ago. The four dukes' houses refer to the four families of Bethaleus, Knight Rey, Lanzworth and Balma. In the "Sabrie's Tragedy" thousands of years ago, because of stopping Baskava and getting four doors leading to Atiz. Therefore, the state endows it with many status and rights. The four dukes' families monitor each other, among which Bethaleus and Knight Rey have a particularly disharmonious relationship. Sabrie (サブリェェ/Sabrié), the capital of 2111 years ago, was pushed into Atz by the Baskava family for unknown reasons. In later generations, it was called "Sabrie's tragedy". Now Sabrie is a huge slum, and its central point is poisonous gas, which is controlled by Pandora and no one is allowed to enter. Latvez College is an elite school composed of aristocratic children aged 13 to 18. Edda, Eliot and Leo are all students of this school. In the past, there were various uses such as prisons and shrines, and there were also many secret passages. The door refers to the door that connects to Atz, with five doors, four of which are currently owned by the four dukes, while the fifth door is in the hands of Baskava. Sinclair family (シンクレビ family) Fifty years ago, the aristocratic family served by Blake was extinct because it was not pleasing to the eye of the four dukes. Although Atz's will has changed the past, he still cannot escape the fate of being destroyed.