She balances spreadsheets, school pickups, and sniper rifles — all in the same breath. MBC’s upcoming action drama “A Bona fide Killer” has dropped its first stills, and Kong Hyo Jin is already stealing the spotlight with a role unlike anything she’s played before.
The Ultimate Working Mom Juggling Act
Kong Hyo Jin stars as Yu Bo Na, manager of Sales Team 3 at Durumi Electronics by day — and a legendary sniper known as “Kingfisher” by, well, also day, depending on the assignment. After returning from a three-year parental leave, she quietly resumes her double life as someone who eliminates dangerous criminals who’ve slipped through the justice system, all while trying to keep her family life intact.
The newly released stills capture this striking contrast: one shot shows her aiming a sniper rifle with an ice-cold gaze, radiating the calm precision of someone who can take out a target in a single shot. Flip the scene, and she’s deep in spreadsheets at the office, fully embodying the buttoned-up professional. At home, she softens into a warm, approachable mother who handles chores and family time with an easy smile.
For more upcoming K-drama previews and premiere dates, check out TechnoSports’ entertainment section.

A Role Built on Contrast
According to the production team, Kong Hyo Jin is portraying these dueling identities with depth — the everyday joys and struggles of a working mother layered against the quiet menace of someone criminals genuinely fear. It’s a tonal balancing act the team says will reveal a side of the actress audiences haven’t seen before.
Kong Hyo Jin: A Bona fide Killer
| Detail | Information |
|---|---|
| Lead Actress | Kong Hyo Jin |
| Character | Yu Bo Na / “Kingfisher” |
| Day Job | Sales manager at Durumi Electronics |
| Night Job | Sniper who eliminates escaped criminals |
| Network | MBC |
| Premiere | July 31, 9:50 PM KST |
Kong Hyo Jin, known for her versatile filmography, looks set to deliver one of her most layered performances yet in this high-concept action drama.





