The Netflix series 'Mercy for None' is gaining significant popularity even before its official release, topping the charts for upcoming content according to the "OTT K-Original Content Viewer Evaluation Report" for the third week of May 2025. The show follows the story of Gi Jun, portrayed by So Ji Sub, who returns to a gang after his younger brother's death, leading to a revenge-driven action drama based on a popular Naver webtoon.

This series marks So Ji Sub’s return to the action genre after 13 years. The intense action and violence in the show have led to it being rated R or 19+. The story revolves around two factions, Juwon and Bongsan, with a focus on the Juwon organization, notably featuring Lee Ju Won (Heo Jun Ho) grieving at Gi Seok’s funeral, sparking curiosity about the plot's direction.

The character dynamics include Juwon's son, Lee Geum Seon (played by Choo Young Woo), who has distanced himself from the gang to become a prosecutor, and Choi Sung Chul (Jo Han Chul), Juwon’s right-hand man. The unexpected death of Nam Gi Seok (Lee Jun Hyuk) propels the revenge narrative forward. The show is set to premiere on Netflix on June 6.

Additionally, there is a significant interest in upcoming adaptations of popular webtoons and web novels like the film 'Omniscient Reader’s Viewpoint' and the drama 'The Remarried Empress,' tapping into established fan bases for success in a competitive market landscape.