Kyoko Fubuki works as an assistant judo instructor at the Sugata family dojo and helps manage her family's eatery. She operates a motorcycle proficiently. Her energetic and outspoken personality leads her to frequently scold Sanshiro Sugata for his mistakes, reflecting her straightforward and critical nature.

Her relationship with Sanshiro evolves from friendship into romance throughout the series. She provides him practical support and emotional encouragement in his PlaWrestling pursuits. Her judo background informs her approach to challenges, emphasizing discipline and strategy.

Within Sanshiro's team, Kyoko offers supportive assistance, accompanying him to tournaments and providing logistical or moral backing. She interacts with other team members like Shota Yamaguchi and Tetsuya Hasegawa, though her primary narrative focus remains her partnership with Sanshiro.

The sequel manga "Plawrestler VAN," set 20 years later, confirms Kyoko eventually marries Sanshiro, cementing their long-term relationship.