If you haven't seen the first 2 seasons, I'm not sure why you're watching this.
Assuming you have seen it all, then I'll begin my review. Still not a fan of the abusive relationship. I never will be. That being said, this season actually showed character growth, albeit it was very little. This show has too much fan service to be considered a children's anime, yet the show is so childish.
This story could have been done in 3-4 episodes, but they wanted to draw it out with ridiculous situations. They engineered childish situations and solved them with the same ridiculous... ugh. The worst part is how this season concluded. No consequences? Are you kidding me? They hypothetically started a war, actually committed treason, and yet were rewarded? It's absurd.
At this point, I'm watching the show because I'm hoping something different will happen. I dunno, like transform into a good anime. Perish the thought.