- Mushi; the life-blood of nature. They exist everywhere in various forms: micro-organisms, fungi, bodies of water. Sometimes, they're even mistaken to be plants, animals, or spirits. But regardless of their appearance, they exist, nonetheless, living the only way they know how. At times, their actions can cause strange or unexplained phenomena. Enter Ginko, the Mushishi (mushi master), as he continues encountering, studying, and dealing with the mysterious mushi along his journey into the unknown.