The Wise Man's Sword

Due to an accident, he was reborn into another world—but it was the world of a game he had played before his rebirth, and moreover, he was born as a joke character who dies early in the scenario. Therefore, to avoid death, he desperately grew stronger by utilizing his knowledge of the game—and eventually, having gained unparalleled strength, he runs about on a continent where the Demon King is attacking. ※ Serialized as a book by Hero Bunko. Volumes 1-7 on sale.