The White Tigers arc
Kate faced Mariah in a Hong Kong alley when she insulted the Bladebreakers saying that they just didn't want to fight against her because she was a girl. Mariah also called Kate a mean girl who didn't know how to fight in the streets. When Mariah used her beyblade to destroy the bowl in order to threaten the Bladebreakers, Kate launched her beyblade and also destroyed a wall behind the White Tigers.
During the whole Asian championship Kate got several times in trouble because of her new way of life. It was very different from the wealthy life she had with her friends in Europe. She had to learn how to eat pizza with hands and she also had to learn how to share the bathroom with other people as well as take less time in the bath. Another common problem was that Kate still didn't understand Japanese very well, so many times she got confused when talking to the guys, and Tyson always took all chances to make fun of her. Kai was a great help to Kate because many times he translated things to the girl since he was also a descendant of Russians.
Kate also proved she was very realistic and generous. When Ray abandoned the Bladebreakers to look for Driger, Kate was the first one to accept his decision because he needed a time to think about which team he really wanted to be part of. Kai agreed with her, but Max and Tyson decided to look for Ray anyway. So Kate and Kai spent the rest of the day training together. They were being observed by Ken, the quietest member of the White Tigers. Kai saw Ken fighting once in the championship and he knew that the boy was very strong, and he couldn't tolerate the idea of existing someone stronger than himself. Kate noticed that Kai was worried about Ken and calmed him saying that the only way to solve his questions was fighting against the boy.
Kate only fought twice before the finals. The first one was against a Charming Prince, since the White Tigers were there and she wanted to show them (especially Mariah) that the Bladebreakers were not weak as them thought, as well as she wanted to encourage Ray to fight even without Driger. She won her battle and got really proud of Ray when Driger came back. The second fight was against a Blade Hunter. That day Kate, Ray and Tyson were going later to China Tower when Kevin provoked a mudslide. As Ray got hurt and Tyson was helping him, Kate needed to go alone until the stadium before the Bladebreakers lose by WO. Kate ran like she never did in her whole life. She was exhausted and her clothes were dirty and torn when a Chinese peasant who was riding an alpaca appeared. Then he helped the little desperate girl arriving at China Tower on time. After defeating the Blade Hunter, Kate asked some bananas to him and gave them to the strange man with an alpaca who saved the Bladebreakers. She was so mad because of her clothes that Max, Kenny and Kai were scared with her, but after this scene, they actually got proud of her.
In the finals Max lost his match against Gary, Ray won his against Mariah as well as Kai also defeated Ken. But Tyson's match against Lee finished in draw, so Kate would have to fight against Kevin in the last battle. However she refused to fight because she knew that Ray still had some unsolved problems with Lee. After some argument with the DJ the judges approved a final match between Ray and Lee, and Ray won. The Bladebreakers became the new Asian champions then.