Aria Knight's Handbook

Many years later, the greatest protector in the history of the North, the old Duke Blake, stood on the castle in the capital of the kingdom, watching the sunset and recalling those days... ———— Aria continent, Northern Province, Silver Castle City. An arrow at that time—— Killed the emperor of the Kingdom of Loland... With the continental war caused by the orcs. Dwarves, elves, dragons, sirens... It caused a storm in the mainland. And in Silver Castle City in the north where the storm started. At that time, Blake was still a reserve knight. That day, he watched the king fall from the castle with his own eyes, Then, He drew out the sword in his hand...