The Incompetent Hero

Echo 1, a soldier raised on the battlefield, fights with the aid of his combat AI and technologically advanced equipment. After a fierce battle, he finds himself in a new world without access to his equipment or his combat AI. He soon learns that he is one of the seven legendary heroes summoned to save humanity from a demon threat. At the same time, there is a struggle for power in the kingdom that summoned him. The king has been killed in battle, and his successor has yet to be chosen. The candidates for the crown are trying to undermine each other and prove their worth by saving the kingdom and the world with the strength of the summoned heroes. Now, armed only with a shield, he must navigate a world that views him as weak and incompetent while he finds a way to repair his combat AI before the next demon attack.