As a little girl, Towa was very sweet and admired her older brother. She dreamed of becoming a Grand Princess for the sake of helping the land, but knowing that only a Princess Pretty Cure could become one eventually got to her, when she became brainwashed by Dyspear. As Twilight, she seemed to take after her adoptive "mother" in terms of characteristics. In contrast to her child self, she believed that dreams are pitiful illusions that people believe in. Twilight also saw the Pretty Cures as fake princesses, and was ruthless and vain enough on calling herself "Noble, Precious, and Beauteous." While she would initially appear courteous around Haruka, she used their moments together to dishearten her after feeling threatened. After being purified, she is shown to be somewhat naive and awkward around others. While she is polite and formal, her upbringing gave her a lack of social grace as she wasn't used to the customs of Earth, like thinking that she could buy a castle and three housemaids. However, she remains kind, courageous, and helpful, and cares deeply for her friends. She begins to learn how to do her things independently without assistance, but she still heavily adores Kanata and admires her big brother.

Due to being deceived by Dyspear before, she also became observant and perceptive, being able to discern and detect the presence of a suspicious person.