Ashen Knight: The Return of Dragon Blood

Ethan, a former knight who had been in a coma for five years was widely perceived by the nobility as the greatest liability in his wife Claire's life. However, when a Duke's son forced Claire to remarry and members of the aristocracy publicly demeaned her, Ethan woke up. And Ethan's long-lost sister Sophia, a rich Duchess, also came to help him. In fact, Ethan is the Dragon King of the Dragon Oath Dynasty, a lineage bearing direct royal blood.