The story seemed so intriguing at the beginning, it will be crazy and out of the box but it wasn't.
Ep 1-5 - interesting, had fun watching it.
Ep 6-7 - kinda boring, fast forward button was working a lot. I feel like nothing was happening.
Ep 8-10 - interesting, the plot is finally moving forward, we are building up to something.
Ep 11 - what is going on? Why?
Ep 12 - satisfying ending but what was that build up?

Story
It could have been better, the characters are good but nothing was done with most of them.
It was Ryu Soo Yeol all the time doing everything, I wish we saw more of his team working together and solving cases.
The last episode didn't feel like it happened because the main characters were smart and had a plan but because of coincidences.

What I liked
- The bromance between Ryu Soo Yeol and K.
- The bromance between Jae Seon and Oh Kyung Tae.
- Oh Kyung Tae's character development with minimal screen time.
- Andrei and Boss Yong, they are so cool.
- Whenever K showed up and did something crazy.
- Multiple villains and cases, some better, some not.
- The ending even though the build up made no sense.

Overall, good characters meh story.