An era of peace between the hero and demon lord is upon us! In this peaceful world, the hero Corleo is nothing but an empty suit. But one day, a hero and demon lord from another world appear before him! How will Corleo deal with the chaos these invaders bring to his world?! A new type of fantasy epic now begins!

Young Chihiro spends his days training under his famous swordsmith father. One day he hopes to become a great sword-maker himself. The goofy father and the serious son--they thought these days would last forever. But suddenly, tragedy strikes. A dark day soaked in blood. Chihiro and his blade now live only for revenge. Epic sword battle action!

On an Earth rampant with malevolent aliens, a mysterious young boy and a stern old man cross paths in a curious twist of fate...In a universe where magic reigns supreme as the ultimate form of military might, their epic adventure begins!