Genso Suikoden: Tsumugareshi Hyaku-nen no Toki

A mother tells her son a tale of their ancestors battling monsters known as the Terrus Firma almost a century ago and that the monsters are due to return every hundred years. This tale inspired the young boy to grow up as a swordsman so he'd be prepared to fight these monsters when the time came. One day the young man was out with his friends, Myura and Zeno, when they get attacked by some hostile...