Rin Natsuki (夏木 りん, Natsuki Rin?) / Cure Rouge (キュアルージュ, Kyua Rūju?), Pretty Cure of Passion
Voiced by: Junko Takeuchi
This second-year student appears as a tomboy and plays enough sports to have every team clamouring for her to join them, but indulges in a few feminine pursuits, such as a love of boys and is scare of ghosts and legends. She has a very straightforward and down-to-earth personality that sharply contrasts with her childhood friend and classmaate, Nozomi. Her parents run a flower shop, making her busy of helping parents and nursing younger sister and brother. She felt in question for her future at first, but getting interest in jewery design after working in Nuts House. Rin wears red, and she transforms into Cure Rouge; her counterpart is her best friend, Cure Dream. For catching Pinkies, Coco gets a trumpet from her Pinky Catch.
She introduces herself as "The Red Flame of Passion, Cure Rouge!" (情熱の赤い炎、キュア·ルージュ!, Jōnetsu no akai honō, Kyua Rūju!?)
In the first movie, her counterpart is Dark Rouge, who is voiced by Miki Nagasawa.