The Dragon Warrior's Curse

The young Raiden miraculously survives a battle in the Vanguard Battalion against the Pirates, and a mysterious 'serpent mark' appears on his forehead. From then on, his physical strength greatly increases and his sword skills advance, while ancient battlefields and unfamiliar sword moves constantly appear in his dreams. When the Pirates make a comeback, Raiden loses control in a bloody battle and transforms into a dragon. He repels the enemy forces but becomes a 'monster' in everyone's eyes.