The world of Terranum, world of a grand fantasy, once during the ancient time, monstrous beast known as Bellua rolam the entire Terranum, the ancient civilization of human couldn't do anything but serve as food and plaything for the Bellua, until one day.. six people with the power of six elemental magic appear and push the Bellua back, eventually earning humanity reign over both the Bellua and Terranum, thus the start of a new age, known as the age of magic. Time pass, now in the present day, magic had become common and humanity no longer need to be afraid of Bellua anymore, Matoi LePrana Lucet, the princess of the currently reigning kingdom of RauLucent, was attending one of her kingdom party, celebrating her 17th birthday, in the middle of the event, a pair of shadowy mysterious figure suddenly appear and thrash the entire party, stating their action as the "The End of Humanity".

Mu, the world that exists parallel to our own. It is a world that harbors shadowy manifestations of people's feelings called Nullities. One day, Fragments, dimensions that connect Mu to the real world, begin manifesting in Shiroki City. With that comes disappearances of people who never return. Kazuki Arata, like most people, dismisses the explanations for those disappearances as urban legends. However, with the appearance of the transfer student Sayaka Uehara and his unexpected trip to a Fragment, the wheels of fate begin to turn on this new chapter of his life. Highest rank - #40 in Lightnovel