If you are searching for a Hindi version, be aware that many unofficial sites might claim to have it. For the best experience, you can check these official platforms:

After saving Jae-ho’s life during a prison hit, the two form a deep "blood brother" bond. Upon their release, they team up to seize control of the mafia, but their alliance is constantly tested by layers of deceit, hidden motives, and shifting loyalties.

On many Hindi entertainment portals and download sites (like the DDR style mentions), this film is categorized under "Lifestyle" or "Entertainment" for a reason:

The film follows (Sol Kyung-gu), the ambitious second-in-command of a major drug-smuggling syndicate who dominates his fellow inmates in prison. He crosses paths with Jo Hyun-soo (Im Si-wan), a defiant newcomer who refuses to submit to prison hierarchy. The Merciless (2017)