Koshino Natsuko (越野夏子 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. 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. After this little episode, they continue to cosplay as Pretty Cure.