I think Foggle, it's because it was sillier and didn't take itself seriously.
vol 13 is my most disliked volume because I had my weirdo Shiouji, confidently go into his office and be hacked. The whole scene gets serious and then... then!
Miwa sticks her chest in his face! Oh, mein... He lost everything that he was in that scene.
And I love Elgala/Excel too, but I miss Hyatt. I also liked Wantanabe/Hyatt, and I've gone 7 volumes without that!
Also, there are no long distance trips to weird locations with people like the manager there...
I'm all for wrapping up the plot, but must the dynamic be changed so? I don't want to give the impression I disliked 22, but I wasn't excited or all that into it. It makes me sad. Because I think I'm losing interest.