7\10.

Well... mc was fun and I like his stoic character, Neneko and her hikikomori-chan type(like Watamote mc) is also fun, but overall this title is one of the "I'll forget it the next day after reading" vns. Poor presentation, nothing deep, nothing extraordinary, just fine detective with a touch of mystic and horror, but at least not boring to read cuz pacing is good: "straight to business" with rare pauses for little breaks(just like normal detective should be).

I was going to give 6\10, but extra was kinda fun and changed my mind a little, so I recommend to check it after main story.