Days before her marriage to the king of the neighboring Sunruta Kingdom, Princess Annabel of Najir is abruptly betrayed by her fiancé and thrown into prison with her magic knight under suspicion of being a spy. After being held captive for months and informed her kingdom is no more, Annabel passes out in a burst of destructive magic, only to awaken as her 12-year-old self, six years before her political marriage. Armed with knowledge of the dark future to come, she now has another chance to bring about a new fate.

One day, the life of middle-aged Japanese businessman Ryoma Takebayashi came to a rather sudden and disappointing end. Ryoma had never had a blessed life, but after his death, three great gods sought his cooperation and reincarnated him as a child in another world with swords and magic!

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction. As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

A bicycle crashes into me one night, and the next thing I know, I’m a baby? Getting reincarnated in another world populated by humans, demi-humans, and mythical beasts is certainly not the turn I thought my life was going to take. I especially didn’t expect to be carried off by a wolf and given into the care of a one-armed former knight. Now, I’m trying to repay him by rebuilding the family inn and healing his arm with alchemy.

Naofumi Iwatani continues his adventure in this second volume. But his task is not yet complete and obstacles mount as the increasingly ominous waves of destruction approach. He finds a new friend and new powerful abilities that may prove to be too dangerous for the companionship. Will Naofumi live up to his role as the Shield Hero and save the world from its prophesized destruction? Or will his dark side consume him?