After watching this drama (Extracurricular) I was wondering if there are any other dramas where the main leads are the anti-heroes or participating in some kind of illegal or immoral activity. The only other drama that I've watched that has fit this requirement is "Kill It." Please help!

This is an old post, but I would suggest Doctor prisoner and misty.

I'd say Cruel City, Hyena, Cheese In The Trap, Kill It, Bad Guys, Mad Dog, Flower of Evil.. These are dramas i've watched, all fit the criteria in general but it's nuanced, some do unethical/immoral things for the greater good, some for their undercover job, some are misunderstood, some are machiavellic, some are psychologically ambivalent and complex...

Add Class of Lies, Awaken, and depending on your 'kind' of doing bad things preference perhaps you'd like the clever charming con artists of shows like 38 Task Force, Player, Switch, etc...

vincenzo is the most recognized one

1. Kill It
2. Bad Guys
3. A Korean Odyssey
4. Cruel City
5. Moon Lovers: Scarlet Heart Ryeo
6. Lawless Lawyer
7. Taxi Driver
8. Sell Your Haunted House
9. Awaken
10. The Veil