It's because I liked bunny girl senpai and the two main characters in this show are voiced by the same voice actors. I knew nothing about it except for who's voicing the characters so I had no expectations beyond good voice acting.
[Setting and Set up]
You can already tell from the description of the anime the mc isn't going to get a strong start. Isekai in general commonly has op protagonists, putting people with unmarketable skills into worlds where their unique skillset is actually useful and often the most important skills to have. So this show is original in its first episode, where the main character is given no skills at all both worlds and starts completely useless.
Unfortunately, before we know it, his shield, marketed as the most useless weapon, become incredibly op and was now no longer a real plot point except as a reason he needs a team until he didn't, since his shield ended up becoming so op he could attack with it as well.
Basically, the uniqueness of the story disappeared immediately, but I wouldn't say it made it a bad anime. A show doesn't need complete originality to be good. However, it didn't stand out from the other seasonal animes either.
[Characters]
The characters can be split into four tiers, with almost all of the characters in one tier and pretty much one character each in the other ones.
- The one-dimensional dumbasshole tier
This will include, the king, princess1, head priest, and all the other heroes. These characters do not develop in any way throughout the story. The king and princess1 are defined only by their barely explained a unjustidied prejudices which are needed to set up the story.
Some people might say the heroes changed but they didn't. A character's growth isn't defined by the actions they take but is defined by the perspective. If you learn new things and act based on it using the same thought process you once did, you didn't change, time only passed.
-The traumitised damsel and mary sue at the same time tier
This is only Raphtalia. She's the raccoon waifu and probably the reason most people watched this show. MC buys her as a child soldier slave after no one wants to join his party, so, you know, good start. She becomes an adult after one episode with some weird explanation about how animal waifus grow physically alongside their levels though, I have nothing to say about that.
She does everything, falls in love with the mc, is completely selfless and forgives her old enemies even though she probably shouldn't and it causes more problems for everyone else.
-The hero fanclub tier
This is princess2 and the queen. They like the hero and are on his side. They're the good guys in this show.
-The why does this character exist at all tier
This is the bird child thing the mc has. She is also his slave.
I don't know why she exists at all. She only does things in the filler episodes, which this 24 episode season has for some reason and is otherwise just the loli for the pedophiles watching this show.
tldr
It's a find anime to have on just to pass time but it's not a game changer in any sense. If you want to watch it for the raccoon waifu, go head, but if you're looking for a japanese animated equivalent of a Chekhov play, not only are you an idiot, but in you're in the wrong place, my friend.
