Koshino Natsuko

Koshino Natsuko (Summer in English Dub) is a girl in the same class as Nagisa and Honoka. One day she and her friend, Mori Kyoko, decide to cosplay as the Pretty Cure, leading everyone to think they are them, however until they found this out, Nagisa and Honoka thought they had been discovered. As they are only cosplaying, the girls do not have any powers or abilities and are normally seen pretending to play hero for younger children.

Poisony decides to use this against the Pretty Cure and kidnaps them and threatens to harm them if the real Precure do not show up and hand over the Card Communes.

After this little episode, they continue to cosplay as Pretty Cure.

Personality
As she chose to dress like Cure Black, its possible that Natsuko is Nagisa like. During the episode, she mentions Cure Black liking strawberries, so its possible she is a fan of strawberries. She thinks Cure Black is cool and cute but Cure White is missing something.

Appearence
Natsuko is normally shown in her school uniform, but when they cosplayed as Pretty Cure, she chose to dress up as Nagisa. Her hair is brown colored with no bangs, but hair framing the sides of her face. It's shoulder length and she wears two small pink hair clips. As Cure Black, her hair clips become hearts.

Her Cure Black costume is very different from the real Cure Black costume, consisting of a dark blue belly shirt/tanktop with puffed sleeves and pale pink lining and a very loose gray collar/cloth and white bow at her chest, below the elbow fingerless gloves with pale pink bands around the wrist and mirror-hearts on the top of her hands, a matching skirt with a pink belt and reflective heart, leg warmers with hearts at the top and tennis shoes. These differences are obvious because she did her best to look exactly like Cure Black with the clothes she owned.

Trivia

 * Koshimizu Ami, Natsuko's voice actress, would later go on to voice a genuine Cure: Hojo Hibiki/Cure Melody from Suite Pretty Cure. Coincidentally, Hibiki has a lot in common with Nagisa.