Kyōko Fubuki is the main heroine of the anime. She serves as an assistant judo instructor at the Sugata family dojo, demonstrating considerable martial skill. Her family runs a sushi restaurant, where she also works, and she is a capable cook who often prepares meals for Sanshirō Sugata and his younger sister, effectively taking on a caretaker role in their household. She is energetic, outspoken, and not afraid to scold Sanshirō when he acts impulsively or makes mistakes, acting as a grounding influence. Physically strong, she is even able to ride a motorcycle, and her combat ability is shown to be formidable. In the anime, unlike in the original manga, Kyōko does not pilot a PlaWrestler herself or directly participate in the Plawres battles. Her role in the story is that of a supportive friend and a moral anchor for Sanshirō, often providing emotional support and practical help. She is also portrayed as a possible love interest for the protagonist, though the relationship remains understated. Over the course of the series, she remains a constant presence, helping Sanshirō maintain his focus on the positive applications of Plawres technology rather than its destructive potential, and she matures into an even more dependable partner and confidante as the stakes rise. Her notable abilities include her proficiency in judo and her practical life skills, such as cooking and motorcycle riding, which complement her no-nonsense, proactive personality.