One thing that I've found with Mushishi is that it often touches on more than just one theme at a time. To varying degrees, social, existential, and fear philosophies are all explored in one way or another over the course of the series. This episode exemplified that rather well, glancing at social stigmata, selfless support, and overcoming ignorance to understand someone. But most interesting to me was the idea of addiction.
|Also, you're two for two with the cute robe girls now, Mushishi.|