Kneel to the Blacksmith, or Face the Dragon

Gideon, the secretly powerful Red Dragon King, hides his identity as a humble blacksmith. When he proposes to his fiancée Cecilia, she cruelly dumps him for his low status. Meanwhile, Princess Isolde, fleeing an arranged marriage, proposes to Gideon. As arrogant nobles and his ex continually mock him, Gideon pulls the legendary sword from the stone, revealing his supreme magical power and dragon lineage, making his enemies grovel in despair.