As always, I find myself tempted to give Nisio more credit than he probably deserves by positing that the fact that there's nothing behind the curtain is part of the point, but...why spend three hours on it, then? Just to troll the audience? (And why bother finally introducing one of the most important and consequential characters in the series for...basically no reason?) If this were actually the end of the series it would be extremely unfulfilling, but given that Nisio did apparently have the post-high school arcs planned all along maybe there's still something there in Off Season and Monster Season? I guess we'll find out in 2030 or so.
I liked seeing Koyomi terrified and embarrassed by Mayoi and the spoiler character, because it's actually not a side of him we've really seen before. The Tsukihi face-washing scene feels like a de-sexualized, humiliating inversion of Nisemonogatari's famous toothbrush scene and is actually pretty disturbing, but...like so much else here, it doesn't seem to have really had a point.
Also I know Nisio loves giving Hitagi no screentime but couldn't we at least get some more Hanekawa??? Please?
