It isn't the best drama, that's for sure, but it was pretty interesting. I wouldn't say I liked the ending, it was so unreal. It didn't reflect reality at all. No one would change their personality overnight.
The cast was incredible, full of good-looking actors and very talented. They made a good job portraying their role, especially the male lead which is INCREDIBLE. Totally fell in love with him. Min was the only character who annoyed me because of the lack of development. She literally had zero character development and did not help the story at all. She was also very limited, all she could have said was "Tor", "You are Tor", "leave my sister alone" and "Tor don't do it". I really wanted a strong FL for our ML since he is such a badass and amazing character. To be honest, I found myself many times asking what he likes about her despite the fact they knew each other since they were little. But still, I have to admit they had amazing chemistry. Didn't like the romance, but still bearable. The action was on point and our ML is just incredible. I also didn't like the music at all. Like, a big turn-off.