Bugs are neither animals nor microorganisms, but a ubiquitous force in nature with a unique life form. Occasionally, they intersect with human life, giving rise to some wonderful stories. But even if people know about the existence of bugs, most of the time they don't know how to deal with them, which requires the help of bug masters. Ginko is a bug master. He has silver hair and is still young, but he has traveled for half his life, passing through mountains and villages, solving bug problems for people. By getting close to people troubled by bugs, he has also gotten close to many stories. Ginko's travels are like the wind. No matter how thrilling the bugs are, they seem to melt into the ink-like mountains. All living beings are just passing clouds. There is no sadness in the faint stories, only tranquility.