(Contract) + (Alien Beast) + (Gold Finger) + (Power) + (Single Female Protagonist) In the future world, the world has changed, and alien beasts have begun to appear. The alien beasts are unprecedentedly powerful, and a professional summoner has also been derived. An orphan whose parents disappeared mysteriously, and who carries the Golden Finger Book of Mountains and Seas. In this world where the weak eat the strong and the internal decay occurs, he relies on his own strength to lead mankind step by step to stand on the top of the pyramid again.
