Mercy for None (2025)

About a man who seeks truth behind the sudden death of his brother. 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. But when his brother Ki Seok rises in rank within the enemy group, Ki Joon decides to slash his own heel and leave the business to avoid fighting him. Just when all seems at peace 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. And he has a feeling he doesn't need to look far to find the main culprit... With revenge and old gang rivalries factoring into the equation, Seoul's underbelly is in for yet another grisly bloodbath! (Source: mangaupdates) Adapted from the webtoon Plaza Wars (광장) written by Oh Se Hyung (오세형) and illustrated by Kim Kyun Tae (김균태). Episodes: 8