When urban youth Xia Liu's fingertips touched the mottled copper bell of the Phantom Shop, the fog of the Aoki Realm suddenly opened in front of his eyes. As an "extraterrestrial visitor" who accidentally traveled through time, he is not only in charge of a mysterious shop that can extract and cultivate phantoms, but also a key lever to leverage the balance of the entire other world. From the timid fireflies to the majestic Klein's Skeleton Wings, each eidolon carries the customer's expectations and destiny. And deep in those dangerous dungeons, lurk monsters that subvert common sense and secret treasures that have been dusted for thousands of years. When the light of the conclusion of the contract illuminates the battlefield, Xia Liu and his partners will use the phantom as their blade to write their own legendary war song in this unknown Aoki world!
