Zaixia Chan Shi Guan: Miao Wang Zai Shang

A woman encounters a black cat wearing a large diamond during a night walk, but the creature's behavior suggests it may not be a typical feline. It takes over her bathtub, consumes her food, and demands she warm its bed. She tolerates this for the diamond, only to discover it has stolen the gem. Later, she is surprised to learn her new boss also wears a collar with an identical diamond to the one the cat had.