The anime is episodic and follow the travel of Ginko, a Mushishi. What a Mushishi ? Someone that study and search Mushi and try to help people to live with them. What a Mushi you ask ? They can be so many thing, that I'll just say that they're being. They don't have any consciousness. They just exist.
"Mushi": the most basic forms of life in the world. They exist without any goals or purposes aside from simply "being." They are beyond the shackles of the words "good" and "evil." Mushi can exist in countless forms and are capable of mimicking things from the natural world such as plants, diseases, and even phenomena like rainbows.
This is, however, just a vague definition of these entities that inhabit the vibrant world of Mushishi, as to even call them a form of life would be an oversimplification. Detailed information on Mushi is scarce because the majority of humans are unaware of their existence.
So what are Mushi and why do they exist? This is the question that a "Mushi-shi," Ginko, ponders constantly. Mushi-shi are those who research Mushi in hopes of understanding their place in the world's hierarchy of life.
Ginko chases rumors of occurrences that could be tied to Mushi, all for the sake of finding an answer.
It could, after all, lead to the meaning of life itself...
Why should you watch it Edit
Mushisi is a must watch for many reason. The series as stunning background and visual and a great and very deep atmosphere. The op and the music is good.