Demonbane

Demonbane is a series of video novel Nitroplus video games including mechas. Initially, the series is in the erie but after its success and its passage on PS2, all the elements were squeezed out. Many adaptations were then released anime or manga. The story tells the story of Kurou Daijuuji who goes on a quest where he has to find a magic book in exchange for a large sum of money. His fate will lead him to AI and he will form a contract with her that will allow him to invoke the Demonbane, a Deus Machina ...

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