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.