Planet Nibiru

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"Planet Nibiru" is one of the names for the object from space that crashed into France and uprooted the entire world order. Other names include "The Great Cataclysm" and the "Jeweled Spear of Heaven". Thus launching the events of the series. Nibiru's coming was predicted by the supercomputer Meena (Mina in the anime) far in advance of the events of the series. While the world took steps to divert the meteor's course they were foiled by the artificial army developed by Takahara Academy. This caused the Japanese government to locate and attack Takahara Academy while also relocating all of its students in the outside world. The meteor would then strike Earth a few months later in 2024.