Mercy for None (2025)

In the dark underbelly of Seoul, a man named Ki Joon seeks truth and vengeance behind the sudden death of his brother, Ki Seok. As the toughest fighter in the world of crime, Ki Joon claims victory in a battle that ends the long power struggle between Seoul's gangs. However, when his brother rises in rank within the enemy group, Ki Joon decides to leave the business to avoid fighting him.

15 years later, Ki Seok is mysteriously ambushed and killed in cold blood right before his own retirement. Filled with a chilly rage, Ki Joon sets off on a one-man hunt to track down everyone involved in his brother's death. With revenge and old gang rivalries factoring into the equation, Seoul's underbelly is in for yet another grisly bloodbath.

As Ki Joon delves deeper into the mystery of his brother's death, he must confront his own dark past and the harsh realities of the world he once knew. With its gripping storyline and intense action sequences, 'Mercy for None' is a thrilling drama that explores the complexities of human nature and the true cost of revenge.