Mushishi is a relatively simple series artistically, musically, and in the set-up of the plot, but the content of each episode, and the relationship between humans, mushi, and how Ginko deals with them can be very complex. Due to the episodic nature, it's hard to get attached to anyone except Ginko himself, but the degree to which Ginko gets attached to people and places makes you at least want to try. The episodic nature also means that you can go back and watch any episode you feel like if you found any particular village or person or mushi rather interesting. This series is suited for people who want a more thoughtful series at the expense of gorgeous art, action-packed battles, extensive character development and teenaged angst, and is aimed at a slightly more mature audience.