I feel like I need to make a short premise: in my humble opinion, if you have a certain amount of interest in the idols phenomenon (you don't have to be a die-hard "wota", just not someone who can't stand it, LOL), then you're most probably gonna appreciate this "Idol Shikkaku" more than otherwise - just like humble me appreciated it.
I really liked the production value / "packaging" and the script (with the sole, partial exception of the ending; more on that in a jiff). Oh, BTW, in case you don't know, the story is based on a novel written by an active member of NMB48 (hence a colleague of the four girls acting as members of the fictitious group "Tetra").
The acting was good as a whole, with some doing better than others as it is to be expected.
And now on to the ending and why I didn't like it too much (spoilers ahead, so stop reading if you don't want them!!!):
I honestly found it way too unresolved, on the one hand realistic, ok, but on the other hand a bit bland/bitter and uninspiring. It would have sufficed to have the ML's phone ring in the last scene where he's looking at the sun to make it right, imho!!!
Still, a totally solid 8/10 in my book.