Kujira no Josephina  

Addio Giuseppina!, Josephina the Whale, Josephine the Whale, Kujira no Hosefuiina, La balena Giuseppina, La Ballena Josefina, くじらのホセフィーナ

According to "Adios, Josefina" by Jose Maria Sanchez-Silva, there is a young Spanish boy named Santi who keeps an invisible whale in a bowl. The whale's name is Josephina and she has the ability to change her size and fly. She takes Santi on exciting adventures and helps him overcome challenges during his childhood. However, as Santi becomes more interested in the outside world and learns about his distant father, things begin to change.