Tate no Yuusha no Nariagari

Tate no Yuusha no Nariagari depicts the story of Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe where he is one of four legendary heroes tasked with saving a fantasy world from its prophesied destruction.
But all is not as it seems as Naofumi is quickly betrayed and framed for a crime he did not commit. With an entire kingdom against him and nowhere to run, Naofumi must rise to become the legendary Shield Hero and save the world!