Aida Mana (相田 マナ Aida Mana?) is the lead Cure in Doki Doki! Pretty Cure. She is a girl who is always eager to do things for the sake of others. Her Cure form is Cure Heart (キュアハート Kyua Hāto?). Her catchphrase is "Kyunkyun!"(キュンキュン！ Kyun Kyun!?) which is the onomatopoeia that is used to express the tightening of one’s chest caused by the powerful warm feelings of love, which suits the symbol Mana represents as a Pretty Cure, the Heart.
Role in the series
Mana is a second year student at Oogai First Middle School, and is the student council president as well. She is a cheerful girl who is great at sports and studies. She is popular at school, and is trusted not only by the students, but by all the adults around her too. She often worries about other people, and takes on various problems on her own in order not to burden others. She is great at taking care of people, resolving conflicts, helping friends out with extracurricular activities, and solving problems. However, she often rushes into things before thinking it through. She is childhood friends with Rikka, who is her secretary, and Alice; also, she is a fan of the Japanese idol Kenzaki Makoto.
Mana is incredibly fast and if there is any problem to resolve, she is very competent of resolving conflicts. She makes friends very quickly and thinks about other people first. Also, she is very courageous, as she heads straight into danger to help people without thinking and even lectures a dangerous Jikochuu. Mana is shown to be a very open and tolerant person as she does not wonder about the existence of fairy mascots like Sharuru, monsters like Jikochuus or her mysterious transformation into a legendary warrior, Pretty Cure.