K/J/C Action/Thriller series/movies 5* (mostly ? ending)

One of my favorite shows. I would love to see more about them.

It reminded me of Taxi Driver, Bloodhounds, My Name, Bad and Crazy, Café Minamdang, and similar. With a happy ending, thrill and charming MLeads, and really bad antagonists. I enjoyed it so much that I didn't want it to end, and I already miss the characters. I wish there was a second season since we only got a bit of a hint of developing relationships at the very end, with each character's charm. This is an underrated kdrama that should have received more attention and appreciation from viewers.

"Post-Apocalyptic" movie - life after a huge earthquake. Heartbreaking, and interesting as well. There is a stand-alone sequel is called Badland Hunters. Acting is great and I can recommend it.

Japanese Action, underground organization, drugs that give superpower.