: Action, Crime, Mystery, Thriller, Comedy, and Psychological.

: 12 episodes, each approximately 1 hour and 10 minutes long. Streaming : Available on platforms like Netflix and iQIYI . Why It's Considered a "Good Paper" (Review Highlights)

: Lee Dong-wook (Guardian: The Lonely and Great God), Wi Ha-joon (Squid Game), Han Ji-eun , and Cha Hak-yeon .

is a 2021 South Korean television series that blends action, crime, drama, and comedy. The story follows Ryu Soo-yeol (Lee Dong-wook), a competent but corrupt police officer who prioritizes success and promotions over justice. His life is thrown into chaos when a mysterious, justice-seeking entity named K (Wi Ha-joon) appears—a "crazy" vigilante who uses violence to fight injustice. Key Details