First of all, let's go over the pros:
+ Stylish, well-made OP1 with great visuals that pump up the viewers
+ Decent musical score, especially the OP1
+ Some interesting plot twists
+ Some interesting information that totally changes the direction of the plot
+ Koyama Rikiya's sexy voice (I'm totally gay for his voice acting skills)
Here's a huge list of cons, however:
- NPCs treated beyond expendable (implications of certain events not further explored; sorry if vague, trying not to spoil anything)
- Empty-feeling settings (even factoring in a certain "syndrome", settings feel noticeably empty)
- Shakespeare inspiration ends up being random Hamlet quotes that seem pretentious
- ED1, OP2, and ED2 are all crap that seem ill-fitted to the show
- Totally ruin a character by turning her from leader into tsundere (part of the reason why I put the show "on hold"; more like pseudo-dropping it)
- Poor transition from first arc to second arc
- Some admittedly horrible character designs (like the blonde dude in OP1)
- Possibly because I haven't watched far enough, but flashbacks involving a certain dead person don't seem relevant and feel like filler
- Plot moves at an intensely erratic pace (super slow plot movement when exploring the past, but insanely quick plot movements in present time)
- Anime has a decent atmosphere in first arc but feels cringy second arc
