Nagisa Misumi (美墨なぎさ, Misumi Nagisa?, Natalie Blackstone in the Canadian English version) is the ace of the school lacrosse team. She is also a close friend of Akane-San (or Alex in the English Dub), who has her own Takoyaki Stand(Doughnut stand in English dub). Her alter ego Cure Black (キュア・ブラック, Kyua Burakku?), is the strong fighter of the Pretty Cure duo. She is the one with the strength and the heart. She is quite girly and image conscious, and has a large collection of stuffed animals. Nagisa is weak in academics but makes up for it with pure spirit and energy. She also has a large appetite and loves to eat chocolate and, according to Honoka, foods with the word "yaki" in the name. She likes shopping but tends to squander her money and ends up having none when she needs it most. Nagisa has a crush on Honoka's friend, Fuji-pi, also known as Fergison (or Fergie in the English Dub), and gets flustered whenever he is around. To her dismay, Nagisa is more popular with the girls than the boys. She has a younger brother, Ryouta (Ryan), who seems to have a crush on Honoka. Aside from Honoka, Nagisa's best friends are Shiho (Shawna) and Rina (same name in English Dub). She is also considered the life of the party, because of her fun spirit and pure heart.Voiced by: Yoko Honna (Japanese), Rocio Barahona (English) As Cure Black, Nagisa wears a black and pink outfit. She is born October 10 and her astrological sign is Libra as was mentioned in Episode 20.
As Cure Black, she introduces herself as "Emissary of light, Cure Black!" (Hikari no shisha, Kyua Burakku!)