Amelia, the kingdom of dragons with a monopoly on magical power, is once again invading other lands with the ferocious Queen Amelia at its head. Her eyes are set on Campusfellow, the small land of fire and iron, which at this rate will inevitably fall… For the sake of the country's survival, Lord Bud Grace comes up with a last-resort plan—ally with the one known only as the Witch, the subject of countless terrifying tales. With the assassin Rollo, known as “Black Dog” and versed in every method of killing, at their disposal, they set out to enter an alliance with the first witch, also known as the Mirror Witch…