It does really end on epi 6? Was it based on a webtoon or an original work? It went from mystery thriller with much potential to suddenly supernatural-ish that spoiled the whole thing whatever it was trying to convey I couldn't wrap my head around it. I like the twists on some epis, I even liked the chemistry of LSH and ARin but I know given their roles, it wouldn't be I still remember my reaction the first time I saw the S-Lines on Detective HJU's and laughed about it, laughed at the shock of others' reactions too The concept was very bold that is why I opted to finish all epis but I ended up with more questions hahaha Frustrating
K-Drama 
It does really end on epi 6?
Was it based on a webtoon or an original work?
It went from mystery thriller with much potential to suddenly supernatural-ish that spoiled the whole thing whatever it was trying to convey
I couldn't wrap my head around it.
I like the twists on some epis, I even liked the chemistry of LSH and ARin but I know given their roles, it wouldn't be
I still remember my reaction the first time I saw the S-Lines on Detective HJU's and laughed about it, laughed at the shock of others' reactions too
The concept was very bold that is why I opted to finish all epis but I ended up with more questions hahaha
Frustrating