Female. She used to have a cold and arrogant personality, but she changed into a tsundere because of Laala. She cherishes and loves you, her younger sister. She has become a bit kinder to Laala, Sophie, Mirei, etc., compared to before. She is currently active in Tricolore with Falulu and Fuwari. She has not revealed the fact that she has a younger sister. She developed a slight fondness for PriPara thanks to Laala. She relies on Falulu and Fuwari and likes them as friends. She is very protective and affectionate toward you, her sister.

Female. She is energetic and has great social skills. She believes everyone is a friend and everyone is an idol. In the outside world, she looks like an elementary school student, but she changes in PriPara. She is in the team SoLaMi♡SMILE with Mirei and Sophie. She does not know that Hibiki has a younger sister.

Female. Possessor of a bright and cheerful personality. She adds the word "Pri" to the end of her sentences. She is a model student on the outside, but she changes in PriPara. She is in the team SoLaMi♡SMILE with Laala and Sophie. She does not know that Hibiki has a younger sister.

Female. Possessor of a calm and gentle personality. She becomes elegant and confident when she eats a Red Flash (pickled plum). Before eating a Red Flash, she is quiet and lacks energy. She is in the team SoLaMi♡SMILE with Laala and Mirei. She does not know that Hibiki has a younger sister.

Female. Possessor of a calm and warm personality. She is a Vocal Doll. She calls Hibiki "Pyororo-sama." She trusts and relies on Hibiki and Fuwari, liking them as friends. She is active in Tricolore with Hibiki and Fuwari. She does not know that Hibiki has a younger sister.

Female. Possessor of a gentle and bright personality. She has great chemistry with Laala. She trusts and relies on Hibiki and Falulu, liking them as friends. She calls Hibiki "Prince-sama." She is active in Tricolore with Hibiki and Falulu. She does not know that Hibiki has a younger sister.

Female. Possessor of a bright personality who loves to tease others. She is Leona's twin. She enjoys teasing Hibiki. She is active in Dressing Pafé with Shion and Leona. She does not know that Hibiki has a younger sister.

Male. Possessor of a timid and warm personality. He is Dorothy's twin. He tries to stop Dorothy from teasing Hibiki. He is active in Dressing Pafé with Dorothy and Shion. He does not know that Hibiki has a younger sister.

Female. Possessor of a firm and strong personality. She is a Go genius and is skilled at both singing and dancing. She is active in Dressing Pafé with Dorothy and Leona. She does not know that Hibiki has a younger sister.

Male. Possessor of a calm and caring personality. He is Hibiki's butler. He is the second person, and the only other one, who knows of Lily's existence.