My Dad Thinks I'm a Guard

To everyone in the neighborhood, he's just a young security guard. No one knows he's a feared master in disguise—or that his father, an aging guard who never stops scolding him, has a secret of his own. When he saves a runaway bride, he discovers she's the woman his father picked for him. As her family and another powerful family look down on them, how long can the two guards keep their identities hidden?