First of all, Jane is the MVP of this show and she is the REAL main character in this story.

The fact that the main character was sitting on a goldmine - a cornucopia of evidence, you can say - and didn't know about it, until the very. Last. Episode.
Infuriating.
This drama was more amusing to watch then it's original purpose of being dramatic/well written/properly portrayed or respectfully represented. Either will do.
The overhead shots of the town (city? village? countryside? no idea! there's only two police officers in that whole police station! *shrugs*) showing the misty forest mountains is the prettiest this drama will get.
The women carried this drama (specifically Jane and Rung - mostly Jane). Even if Jane was a like the other females in this drama - victims of plot devices - Jane's secret sleuthing solved everything. All she needed was for someone to expose the truth to the public with the evidence she painstakingly collected!
But no.
Those who want to help her in her just cause, spends majority of the drama asking the wrong questions and turning their backs on the wrong people. Again.
(Seriously! The trope of being 'stabbed in the back' was overkill and annoying. Too many people in this drama were caught by surprise by someone sneaking up on them. It's old, stop it!)
Nam had the most character development out of everyone surrounding her and she spends most of her screen time on drugs. The acting is questionable and the scene of Jane's death was the best scene with the best amount of talent. The music was appropriate for once in that scene but anytime else... I just watched some moments on mute.

The couple....
I think I had an issue of liking this relationship because of Tan's gaslighting and deceitful habits towards Bun and Bun's general habit of saying one thing about who is he, and then acting in a contradicting way.
He's not a likeable person (to me at least) and he's quick to anger and relies on pettiness so much that it's not helpful at all to the mystery of his supposed-friend's death.
Both lovers need to work on their communication and conversation skills because following along in their 'flirtatious banter', made me pick up my phone to play a game until more of Jane's story was on screen. (Poor Jane, for being surrounded by average brain, spineless criminals.) Inspector M and Sorn were the only redeemable male characters in this drama.
I'm of course bias, so take my review for a grain of salt but the show was tone deaf and disrespectful about such a heavy topics like the sex trade/underage sex/r*pe/prostitiution and human trafficking that endangers soooooo many people (men too) and the drama brings it up in between 'the honeymoon phase' for the main couple: causally and irreverent. Same for the medical and professional practice of Forensics, Physicians/Surgeons and the Police.
Yes, the law is corruptible but before the show so obviously told us law enforcement wasn't to be trusted, the breach of confidentiality and conduct was repeated too many times to be intentional.
The drama had a small budget probably, but it doesn't excuse the production quality and lack of character depth in the show.
The BL exists, I'll admit that but this show could have been better if the mystery/thriller aspect was separate from the BL love story. In this particular instance, the two genres I was so looking forward to, did not mesh together well.

I felt like I brought my scuba, deep sea, diving gear to a kiddie pool at five-years old birthday party. Not impressed.