Dangerous shadows, familiar hearts

When twenty-four-year-old Y/N moves into her first apartment, home security is the last thing on her mind-until Frank Castle steps through the door.

As the hard-edged, protective father of her boyfriend, Leo, Frank is a man carved from quiet gravity, military discipline, and painful history. He notices everything Leo ignores: the flimsy half-inch screws holding her front door together, the loose porch latches, and the subtle ways his son takes her for granted. What starts as a simple favor to reinforce her lockset quickly spirals into a series of late-night texts, unannounced diner pie deliveries, and a fierce, boundary-pushing possessiveness that neither of them can control.
When her relationship with Leo inevitably fractures, the long-repressed tension between Y/N and Frank erupts into an intense, forbidden romance. But building a life together means facing a twenty-four-year age gap, old guilt, and the thick shadow of family loyalty.