Contract with Valkyrie from Fairy Tail

Traveling back to the Fairy Tail world four hundred years ago, the dragons enjoyed cannibalism and human life was difficult. Fortunately, Ed awakened the Hall of Valor system. As long as he achieved great deeds and contracted Valkyrie, he could win a lottery. Successfully become the first dragon slayer in history, and you will be rewarded with the Fantasy Great Sword: Lost Fall of the Demon. Successfully contracting the first Valkyrie Erin will reward the hybrid dragon, the Great Vortex Ancestor God. ... Many years later, Ed has countless forces under his command, conquering the world, replenishing himself, and reappearing the legendary glory of the Hall of Valor. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.