There are some spoilers ahead !!

The cast is definitely a 10/10. Sol Kyung-gu and Im Siwan really had good chemistry and really sold it from antagonist to bromance. The plot can be confusing as they jump from timelines to timelines so it was a bit hard to keep up however as the story goes on it will slowly merge into a storyline that makes sense. The only character I had a problem with was the chief, like I felt like besides wanting the drugs and arresting the gangster she had no depth to her character in my opinion! Im Siwan's character did not deserved to go through what he did!