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Ten years after a cataclysm destroyed the planet, magic prodigy Lag Logline is entrusted with the title of "sage" and the task of preventing the world's destruction one thousand years from now. However when he awakens from his time freezing spell the world he finds is nothing like he remembers. Upon meeting a swordswoman named Clau, Lag finds out that this world one thousand years in the future doesn't know what magic is. After having his own magic mistaken for swordsmanship, Lag enrolls in the Imperial Sword Academy in order to unravel the mysteries of the world around him and fulfill his promise to save humanity.
Once before, Seven mythical Gods appeared on Earth.Their battle split the earth and tore the sky. 10 years after the battle, the calamity should have been long gone already. However. A boy named Shinsen Raika had his true little sister abducted by a god in the battle and was currently standing in the『Academy』on an artificial island in the distant seas. Here, the night was called as after school time. During that time period, the 『Gods’ Proxy War』 were being held by using Divinity-Compatible people for gaining the seat of the law of world (The supreme God).