Chakuro could be your archivist of the Mud Whale, a island that floats over the surface of an endless sea of sand. Nine in ten of those Mud Whale's people were blessed and cursed with the ability to use special forces that doom them, saimia. They have never met, seen, as well as heard about a person who wasn't out of their own, although also his friends along with chakuro have stumbled across islands. Chakuro visits an island as large as the Mud Whale and meets with a girl who can change his destiny.