Wise

No man, you are wrong. I'm currently at the fifth volume of the LN and she is the same as in the anime. Her character is the same and I kind of like it that she's the same. The one tha is a bit different is Medy! And she is so better in the LN that I love her!!

In the anime, Wise is a bit of a bitch, but she is tolerable and just an ok character in the anime. 

But my god, in the Light Novel and Manga. She is such an unlikeable bitch and by far the worst character. 

Literally killing Masato out of nowhere and without hesitation. That just cruel even if she can revive him. That is out of order. 

She's is just an annoying tsundere archetype. There are better and more likable tsundere characters than this bitch. 

She more than happy enough to comment and butt in on matters that aren't even her bloody business, but the second the same is done to her it's a huge problem. She literally doesn't even have a reason to be in the party other than to add more tropes to ridicule Masato and just to be a complete bitch to him.

Not only that, the fact she's over-the-top violent, with it been played as a gag since it only affects Masato.

She is what spoiling the good premise of the Light Novel and Manga.

Best girl of the show to be honest. 

Typical tsundere, and unlike her morally gray mom, doesn't really have much to make her interesting or likeable.