Mushishi Zoku Shou 2nd Season

They are both about a Main Character that can see magical creatures (ayakashi and mushi). Both give a pleasant ride for the spectator, being an episodic kind of show, that follows a simple story line at times. Both are really good, and if you like one of them, it is a fact that you would like the other one. 

This series have the same kind of pace and feel to them without being historical or mystic. Just a feel good slice of life, but it really has the same kind of calmness as Mushishi and Natsume.  

all of miyizakis fantasy work is very similar to mushishi, aswell as the natsume yuujinchou series. Also if youve already seen the above mentioned then i would also watch both seasons of moyashimon, its got a very similar wabisabi effect based around simplicity and the mysterious beyond.