Hilary Tachibana is a girl from school introduced in Beyblade V-Force as Tyson's classmate. At first, she believes that Beyblading is nothing more than a stupid game and Beyblades are just stupid toys, and is referred to as the "wicked witch of the eighth grade" since she makes Tyson clean up the class room after class.
However, as time went by, things have changed for Hilary and realizes that Beyblading isn't as a stupid game as she believes she is after spending time with Tyson and the other Bladebreakers. As time goes Hilary recognises Tyson as her everything as she is seen being by his side no matter what happens.