Isu Jin starts as an average guy until a massive conglomerate wipes out his family, leaving him as the sole survivor. He dives deep into the criminal underworld to dismantle the corrupt empire responsible for his father’s death. This is a classic, gritty revenge manhwa driven by a protagonist who goes from a normal life to a cold-blooded operator.

The pace is fast and leans into realistic, grounded combat rather than supernatural powers or systems. It hits similar notes to Dokgo or Weak Hero, focusing on street-level fights, tactical planning, and the brutal reality of dealing with powerful corporations. If you prefer high-stakes action with a grounded, dark tone over typical fantasy power-ups, this is a solid choice. The art style emphasizes clean, sharp action sequences that make the visceral nature of his vendetta land harder.

Also known as: The Cleaner.

action, revenge, manhwa, crime, underworld, martial arts, drama, urban, thriller, realistic