In Ms. Kobayashi's Dragon Maid, who is Kobayashi's maid?

In "Miss Kobayashi's Dragon Maid," the maid of Kobayashi is Tohru. Tohru is a dragon who takes the form of a maid to serve and assist Kobayashi, an office worker. She becomes Kobayashi's maid after saving her from a mountain dragon. Throughout the series, Tohru's main goal is to make Kobayashi happy and ensure her well-being, taking care of household chores and engaging in various misadventures together.