While I was reading the summary it kinda sounded familiar to this ABC show called Splinter where in a select few cases they have this girl look into the memories of dead people to solve their murders. Of course the supernatural part is not included in the show and there is a certain amount of time they have before the memory part of the brain can no longer be used after death.
The next few chapters we might finally see the root of all the problems. Also with the new revelation that Namsoo and Hyeongoh have some similarities has got me thinking that maybe the dad had an affair of some kind, they are some how related, or they got some Prince and the Pauper shit going on.
They are twins. Hyeongoh and Namsoo are orphans. They were also separated on the orphanage
It's raw, but I read it here:
https://toonkor.com/%EA%B5%AC%EC%9B%90%ED%95%98%EC%86%8C%EC%84%9C
Chapter 60 just updated today.
It's always the quiet ones you got to look out for.