 If you liked
Natsume Yuujinchou
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 ...then you might like
Sousou no Frieren 2nd Season
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Both series have a self-contained story episodic style, along with an over arch slow paced story where the main characters grow as the story progresses and they make new friends and meet new people, and every interaction or situation developes the MC in some way.
Natsume Yuujinchou is more slice of life with the fantasy element being the youkai, but it also has some more "adventure" focused stories. I get a similar feeling of wholesomeness from both of them.
Fun fact, Natsume (main character) was also supposed to have gray hair and green eyes based on the manga, just like Frieren.