Volume 4 (1986-1991): "Door", "Boy Is a Boy", "Liberated Don Quixote", "Martinko", "Big Underground Ball", "Cat and Clown", "Dream", "Kele", "Alter Ego", "Girlfriend", "Croak x Croak", "Cat and Company".
While in the country on a trip with his mother, a young boy winds up playing with some of the local wildlife, and he soon turns into a rabbit himself. In fact, he has the ability to turn himself into various animals, which causes no end of trouble for his family.