Chibiusa's real name is Usagi, but she goes by the nickname Chibiusa to differentiate herself from others with the same name. Despite initially being socially awkward, she quickly gained popularity among her classmates in the 20th century. Her dream is to become a true lady and have her own prince, while also maintaining friendships with everyone around her. Although she enjoys pink and red, pudding, pancakes, and rabbits, Chibiusa's favorite subject is drawing, while language classes are not among her favorites.
Chibiusa is actually the future daughter of Usagi Tsukino and Mamoru Chiba, and was sent back in time to the "present" to stay with them before she was born. Also it was strongly implied that Usagi was pregnant at her and Mamorus wedding