NHK's English education program. In Little Charo 2, the puppy journeys with his master through a mysterious place called the Middle World, which lies between the World of the Living and the World of the Dead. (Source: AniDB)
Genres: Slice of Life
Watch Little Charo 2: Adventure in the Middle World episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.