I finished it. It was good but not great, I liked it anyway.
It started out being really good to me at least...but towards the end, it was like I didn't wanna watch it anymore x.x but the last 15 minutes were pretty good. Shota was my favorite character.
This drama fell flat for me too. It lacked proper character development. And the episodic nature of the drama didn't help with story development either. For me, it Would have been better if the entire focus of the drama was revealing the spy and spider's identity and his partner's murder. The whole deal with the spider wasn't done well either...very anti climatic when his identity was revealed.
This drama is probably the weakest investigation Japanese drama I saw but still not a disaster so I will keep watching it although I am forcing myself to finish it.