Natsuki is a major character in the film Wonderful Precure! The Movie!. She is a mysterious programmer who created the video game Doki Doki♡TanuKingdom. Her appearance features shoulder-length two-toned hair, with blue bangs and turquoise ends, and lime green eyes. She is wise and reserved, with a strong fondness for tanukis and a recent enthusiasm for programming. Natsuki also enjoys going out to eat and dislikes bugs, despite being born in summer. Her motivations are rooted in a personal attachment to a tanuki character named Tanu-chan and a friend named Mujina, a tanuki-like being. In the story, the game she designed traps the main characters, and she holds crucial knowledge about the secrets hidden within its world. As events progress, Natsuki confronts her emotions, expresses her feelings toward Mujina, and says a heartfelt goodbye to an artificial intelligence version of Tanu-chan. Following the adventure, she forms bonds with the groups of Pretty Cures and later visits Animal Town, indicating a desire for connection and growth. Her notable ability is her skill as a programmer, allowing her to construct an elaborate and immersive game environment. Natsuki’s arc moves from being withdrawn and enigmatic to opening up to others and forming genuine relationships.