Natsume has a Book of Friends, if by “friends” you mean “youkai your grandmother beat up with a baseball bat”
I don’t have a lot to say about this one. It’s okay, it’s got a few good episodes, but at the end of the day it’s a pretty forgettable episodic series. Natsume meets a youkai, resolves whatever the problem-of-the-week is, rinse and repeat. There’s some character development, but mainly just in the first few episodes. And it doesn’t have good comedy to carry it either.
The episodic storylines aren’t very memorable. And even though it’s season one, it already felt like it was repeating concepts (like “youkai wants to meet human who helped them”). All in all, it was just kind of bland. Not in a bad way, where I’m bored watching it. But still not something that will stick in my mind.