Why doesn't Kiki understand Kiki the black cat in The Witch Delivers?

Because Kiki experienced setbacks and lost her magic.

Every black cat is a witch's childhood. Every witch has a black cat that only she can talk in her childhood. This black cat symbolizes the childhood witch and her childhood spiritual dialogue.

However, witches must face growth. When they grow up, witches gain higher mana (or better social skills). Growth should also pay a corresponding price, bid farewell to innocence, bid farewell to the special self-spiritual dialogue in childhood, and finally bid farewell to the black cat that witnessed and symbolized a complete childhood.

Extended data

Plot introduction:

Sophia Kao is 13 years old. According to the rules of the wizarding world, magical girls will go out to practice for a year when they reach the age of 13. So Kiki took her pet black cat Kiki on a spiritual journey. However, the spiritual journey did not start smoothly. Kiki came to the big city by the sea. People didn't welcome her and everyone ignored her.

Fortunately, Kiki has a kind heart. Finding someone else's lost property, enthusiastic Kiki found the owner. Her kindness won the favor of the proprietress of the bakery. Kiki used flying magic to serve the guests in the bakery and started a courier business.

Kiki quickly adapted to the new environment. Once, a boy who is keen on airplane manufacturing invited Kiki to a party of a flying club. On the way, Kiki was caught in the rain because she was helping an old lady deliver something. From then on, Kiki suddenly found that her magic was getting weaker every day.