Before I start I'd like to say this is my first manga so if you're looking for a really critical review that compares it to other manga then this won't really help.

Story: Starting with the story from the get go got me completely hooked I mean I've never really looked into reading manga but literally the first chapter and I couldn't stop myself. Aside from that though I feel like the story (in comparison to anime's I've watched) is fairly original though it bears some similarity to stein's gates MC, though only in terms of his ability the MC in this has a really believable personality and comes across as genuine which I almost find weird but pretty amazing and it adds to the story.

Art: I don't really know what to say for art, do people really read manga for the art? I feel like it was irrelevant throughout all of my reading it as I was more focused on the story and characters though one thing I noticed is the size of Sachiko Fujinuma's lips they're huge wtf.

Characters: Man, the characters are amazing in this I feel like it gives you enough backstory to each character though maybe with the exception of a few in the group as it mostly focuses on, obviously, the MC as well as all the suspect of the serial killer. On top of that the actual development itself is great e.g. (minor spoiler?) Kayo Hinazuki starts of quite shy but you see her develop and she opens up her personality. In short, character development is gud.

Enjoyment: I mean I can't fucking wait for chapter 36 my enjoyment for reading this is a straight 10 nothing more to it really.

Overall:
Story 10.
Art 6.
Characters 10.
Enjoyment 10.
Over all I'd give it a 10 so far as I really don't care about the art more the story/characters it's something I think anyone should at the very least look into to see if you like it or not and hey, you might be surprised and find out you love it like me.