Thanks for the chapter but now I remember why I dropped this manga.
1. having psychic detective characters who can supernaturally tell what happened in the past by touching objects in mystery manga is just bad in general. It's bad because there are no firm rules about what an object will tell the psychic, how long in the past the detective can see by touching an object, etc. so it just feels CONVENIENT for the author. Secondly, if a detective has that power then solving a mystery becomes less about deduction and inference and more about just touching everyone and every thing. Furthermore these ESP detectives nearly always have the mechanic of "I can sense powerful emotions and past events" , in which case committing murder would almost always be the most powerful emotion and past event, so the ESP detective should be able to solve any whodunnit-style mystery just by shaking hands with the murderer. So the author either has to come up with reasons to avoid the ESP detective ever touching the murderer, which is a huge tell and very unwieldy or requires and outside culprit which eliminates the whodunnit aspect , or the author has to selectively ignore the detective's ESP powers when it comes to the murderer or come up with an unconvincing excuse like "oh the murderer didn't emotionally react during the murder because he's a psychopath" (which is nonsense, even a psycho would almost always find committing murder and risking getting caught to be the most exciting recent event they had gone through)
2. and even if you can make ESP detective work in a story, say because the main appeal isn't the "whodunnit" aspect, it's especially egregious in this story since the whole point of the book seller detective is that he's meant to be le skeptic scientific materialist who knows all about folklore but has total disdain for superstition and complete confidence that nothing supernatural like goblins or ghosts exist and only uses "ghost" as a metaphor for when he lacks information. BUT being a materialist makes NO SENSE when you KNOW that one of your friends has supernatural psychic powers!!! It's just a complete contradiction. It would be like being certain that no aliens exist even if you had clear proof that life arose independently on both earth and mars.
It's a shame because everything else in these stories is really good but adding a psychic detective who can just touch things to see what recent emotionally powerful events have happened but the author conveniently chooses when his power works so as not to give away too much of the story even though he could just go around touching everyone and everything and the whole thing would become obvious breaks the story.
It's such a bad , unnecessary decision. I know the author created the psychic detective character for another series of books but why not just keep him in a different universe? makes no sense to bring him into the same story as a materialist Sherlock Holmes character AND have that Sherlock Holmes character continue existing that nothing supernatural exists. Plus ESP ruins the deduction and inferences which are the main appeal of the story.