Duelist

An undercover veteran who guides the pursuit of the counterfeit gang. He blends street-smart instincts with cautious authority, mentoring his team and orchestrating infiltrations. His presence anchors the investigation while he weighs the costs of crossing lines for the greater good.

A skilled martial artist detective who pursues the Sad Eyes with fierce determination. She balances professional duty with a developing personal connection to the killer, and her resilience drives the mission forward. Her expertise with long knives marks her as a formidable frontline investigator.

A masked, deft swordsman whose presence unsettles the police investigation. His charisma and lethal skill mask ambiguous loyalties, driving the plot as deeper conspiracies emerge. He embodies danger and tenderness, especially in his interactions with Namsoon.

A powerful defense minister entangled in a plan to overthrow the king. He wields political influence and swordplay, presenting a dangerous mix of charm and menace. His actions reveal the depth of corruption and the threat to royal stability.

A formidable figure tied to the counterfeit plot, aligning with corrupt officials. His presence signals the reach of the criminal network and the danger faced by investigators. He remains a persistent obstacle as the case unfolds.

A powerful yet uncredited presence within the world of influence, adding tension and intrigue. She embodies the hidden networks that intersect with law and crime, contributing to the central conspiracy's danger and allure.