📘 Novel Summary — Heartbeat Behind the BadgeIn Seoul’s elite Investigation Unit 7, the youngest officer Han Ho-Ji is known for his brilliance, combat skill, and sharp instincts—masked behind a playful, fearless, flirtatious personality. He solves cases fast, thinks faster, and fears nothing… except admitting what his heart wants.Two new officers join the team on the same day:Kim Sa-Re, a confident and observant officer who immediately catches Ho-Ji’s eye. His first glance at her feels like love at first sight, but she misreads him as unfocused and unserious.Jung Min, a calm, cold, and nearly expressionless officer, carrying a painful past that has locked his emotions behind silence. He views Ho-Ji’s playful nature as reckless and irritating—sparking instant rivalry.Their first major murder case begins at the riverside. Jung finds crucial clues, Sa-Re admires his professionalism, and both newcomers assume Ho-Ji is too distracted to contribute. But when Ho-Ji reveals his own findings, the entire case flips—he identifies the killer, motive, proof, and timeline in seconds. The team is stunned. Respect replaces doubt, curiosity replaces judgment, and the rivalry between Ho-Ji and Jung deepens into something neither of them can explain.What follows is a slow-burn emotional thriller layered with:Hidden motives behind crimesMisunderstandings between heartsJealous rivalry turning into silent longingUnspoken attraction disguised as irritationMoments of care, tension, and emotional cracksA love triangle that isn’t what it seemsBecause while Sa-Re thinks she is caught between two men, the real emotional collision is between Ho-Ji and Jung Min—in stolen glances, frozen reactions, and feelings neither of them is ready to confess.The murder files may close quickly…but the heart files remain encrypted, waiting for the right moment to be unlocked.A story where justice wears a badge, love hides behind silence, and rivalry is just the first symptom of an unstoppable heartbeat.