Charo is a small Japanese dog defined by his unwavering drive to reunite with his owner. This motivation stems from an earlier separation in New York, prompting his journey home.

Within the Tohoku-focused storyline, Charo undertakes a quest to find eight star talismans, the "Eight-Starred Note," scattered across Japan's Tohoku region. Locating these talismans is crucial to prevent the resurgence of the legendary monster Tenaga-Ashinaga. His mission leads him through specific locations like Tono in Iwate Prefecture, where he encounters and receives aid from various mythical creatures drawn from local folklore, who guide him along his path.