Nemo suffers from constant nightmares and often finds himself falling out of bed in fright in the morning. However, his nighttime experiences soon change when he is invited to the wonderful Slumberland, where anything is possible! There, King Morpheus summons him to be his daughter's playmate and gives Nemo a special key that can open any door in the kingdom. However, King Morpheus also makes him promise to never use it on the door with the key's symbol on it, for beyond that door is a world full of nightmares...
One afternoon on her way home from school, Haru saves a cat from getting run over by a truck and promptly gets the shock of her life when it stands on its hind legs to thank her. That night, she is greeted by a parade of felines who inform Haru that her earlier heroics saved the prince of the Cat Kingdom. Haru suddenly finds herself inundated with gifts of mice and catnip as means of thanks, culminating in the announcement that she will be taken to their kingdom to marry the prince. With no desire to marry Prince Lune, Haru turns to The Baron and Muta from the Cat Bureau for help, but unable to stop them, Haru is swept away by a horde of cats. Can Haru prevent this marriage of inconvenience and return home before she becomes a cat herself?
The fantasical world created in both will turn up the imagination.
They are both family friendly tales with animorphic characters and bizzare unique ones in little nemo
Both are feature length and sport cel drawn animation. The Cat Returns is notibly better.