For an anime that has specifically an Action and Fantasy tag, the worst part I found while watching this show was the action.
Reason being after a few episodes it will be apparent that a large majority of the attacks aren't shown to connect. Instead you get some action slide show where the character does some attack swing, but then the camera scene swaps to the bad guys flying backwards as if they got hit. You barely see any actual continuous action instead it's just showing you the aftermath of the attack. A common camera trick even in anime i'm sure to save money on the budget, but for an anime that has such a heavy focus on action it got annoying seeing it happen so many times.
Besides that the rest is okay and average. The actual main story is somewhat interesting with the political royal scheming, but the MC instead is doing some side quests which deal in a slavery arch which aren't too bad if it was short. However, the slavery stuff has continued so long as the main story it really isn't interesting or new.
Characters are rather simple not very memorable in my opinion, but thanks to there being so many it does make the world feel pretty alive.
I will say this show is strong in adventuring as it builds up the world where the MC's travel to many places and meet a number of people it really feels like a wide vast place, but because of that lacks depth. There's a number of characters and they aren't given much of the spotlight to shine to really care about them which even includes the main characters a bit.
I'm sure you already have heard or read about the controversies with this show, so I won't mention it much. Just know it happens more times than literally just at the beginning too, so if it's something that bothers you I wouldn't recommend continuing.
The OP and ED are good.
Ultimately, I would recommend this anime for a person that is looking to watch something where they want to see the hero/knight save a bunch of women basically tons of damsel-in-distress situations. Along with the MC being basically OP broken which leads to I want to say a low tension show. And a good amount of adventuring the world to new cities and places in which they meet many other new characters.
