This anime, based on the manga of the same name, is worth watching.
The good:
The characters are interesting; they are not too much stereotypical (yes the main character do follow the reluctant hero type but that's only the starting point). Their motivations are understandable, if you give them the time to expose why they are doing what they do, and there is personal growth.
The story is strange, not totaly new in some aspects, but if this follow the manga (and for now it has followed it) it will get to some pretty interesting territories, with some interesting psychological aspects to it.
The design is good, and the animation is well done.
Music is on point (the ending song is epic and it's from the same band that did Goblin Slayer opening).
The bad (?):
The thing that could discourage some viewers is the ecchi part. Honestly i think this anime doesn't even have that much fan service compared to other more famous mainstream anime, even in comparison to anime aimed toward younger audience (like Fairy Tail, or even Ranma 1/2).
Yes there is some partial nudity, but is not all over the place, and at least they have human realistic proportions and bodies that follows the laws of physics.
And yes there is a concept in the story that hint to something sexual in nature, but once again somethign similiar has been done in more explicit ways in more mainstream anime (like Darling in the FranXX).
In short:
If you like anime with a very good story, good characters, well animated and don't mind partial nudity here and there i would say this is a must watch of this season.