Unicorn's Special Holiday

When unicorns were no longer children's favorite animal figures,
they were "reassigned" to the Beautiful Holiday Hotel.
The fluffy bunnies that replaced them also fell out of favor after a short while.
The unicorns and their former rivals, the fluffy bunnies, gradually became friends in the apartment,
living a happy, comfortable, and cozy life every day.
However, occasional accidents and some clues made them increasingly curious,
so they devised a perfect plan and ultimately uncovered the astonishing secret of the apartment.