My Neighbor Totoro is a Japanese Middle Grade (I think?) novel with fantasy aspects, based on the movie of the same title. I got my copy via interlibrary loan.
Review:
Mei, Satsuki, and their father, Tatsuo, move into a crumbling old house in the country in order to be closer to the sanatorium where their mother, Yasuko, is recovering from tuberculosis. The girls adapt to their new rural life pretty quickly, although four-year-old Mei doesn't respond well to being left with their neighbor while Tatsuo is at work and Satsuki is at school.
Both girls realize there's something a little strange about their house when they first arrive. They briefly spot little beings called soot sprites, and Kanta, the boy who lives near them, tells them that their house is haunted. Then Mei starts talking about having met a being she calls Totoro and who Tatsuo believes is a forest spirit. Satsuki longs to see Totoro too.
