The Greatest Magicmaster's Retirement Plan

Okay, so by the end of the 7th book, I was enjoying this series. Fights took a bit too long and I had to skip ahead sometimes, but this is where I lost my patience. I had bought up to vol 17 for the deal, but I guess I'm out $50. The characters have good heads on their shoulders, and make good decisions. But the enemies he faces are awkward for a story like this. It's trying to be an epic when I didn't pick up a light novel for an epic. I picked it up for a power fantasy. Instead I have a guy with no interest in romance (which is fine) and ten girls fighting over him and the enemies being too secretive. Halfway into this book it's clear that somehow they tricked him and rather than the BEAT MAGICCASTER EVER, figuring it out, he somehow just doesnt pick up on the issue. Which completely ruins the point of a power fantasy. If the good guys are screwed over this much because their #1 missed something, then this isn't a powerfantasy. It's just how real people work. You missed the point.