The breaker season 3
You're referring to the popular Korean drama "The Breaker"!
The Breaker is a manhwa (Korean comic) series written by Jeon Geuk-jin and illustrated by Park Jin-hwan. It was adapted into a drama in 2007, and a second season was released in 2017.
As for Season 3, I have some bad news: there isn't one. The drama concluded with its second season in 2017, and there hasn't been an official announcement about a third season.
However, the manhwa series is still ongoing, with new chapters being released regularly. If you're interested in continuing the story, you can check out the latest chapters online or purchase the physical volumes.
If you're looking for similar dramas or manhwa with similar themes, I'd be happy to recommend some!