This is a short Gegege no Kitaro picture/activity book aimed at young children. This book was released in 1986, so the character designs of Kitaro and
his friends reflect that of the third anime series. Readers are meant to solve puzzles, mazes, and other types of games in order to save Yumeko. Since the book is aimed at young children, the puzzles aren't all that complex, but it's still a cute book regardless.
As always, I hope you enjoy!!
