So Once upon a time there was four heros that protected the land from catastrophies, many many years later they are known as the heros of legend! The Sword, The Spear, The Bow, and The Shield! Well now the catastrophies are back and once again a need to summon 4 mighty heros from far away worlds is here.
Main Character Naofumi is the shield hero! Honestly I really love the character development that happens for him as well.