The show was so poorly executed, despite a decent premise, that I STRUGGLED to even make it near the end of season 1. The main female protagonist trying to force herself upon the male interest was uncomfortable to watch, and there was so much redundant exposition, the show was not enjoyable to watch.
The show deserves its low ratings because regardless of presenting itself as a mystery/suspense, maybe even horror or action, it failed to deliver anything unique/special. The animation and art designs were good enough, but nothing that would be distinguishable from any other demon/yokai/spirit/curse, etc. Type of anime. Despite watching 9 1/2 episodes of the first season, I couldn't retain any entertainment or sense from the plot and had to drop it (this would have been okay to watch if I was expecting a slice-of-life where nothing happens but it was severely disappointing to expect a mystery for it to have pacing like a slice-of-life). The show started out with potential but quickly became dull. Terrible pacing and so much nonsensical dialogue where characters are narrating just to fill up screen time with information that did not make sense or matter for whatever plot was planned initially. It might be better reading the material but there was absolutely nothing noteworthy for the show.
None of the characters were likeable for me (maybe Steel Lady Nanase but I mean, TEN episodes focused on her when I was expecting more variety.) It shouldn't take about 4 hours to WATCH only that section about her. The last few episodes were Kotoko trying to come up with solutions for the same issue. Seriously, could we move on? If you want to waste 4-5+ hours of your life watching this, go for it. And there's a season 2 as well if there's nothing better for you to do and just want to use up pretty much half your day.