Honestly, it was a satisfying read. I, too, felt like the pacing was sometimes all over the place, and not just during the final chapter(s), but you know what... Better enjoy a relatively short and concise story that doesn't overstay its welcome than have it drag on for a hundred chapters.
The reverse-isekai ending was fun (although imagine the chaos that commenced in the otome-world when all the prominent figures just disappeared in a flash, lol), and I loved the way the characters adapted to our modern reality. Sakaki best girl btw :3