Crystal Zakuro, was a legendary blader in the blading world because of the Victories win in the battle against Inferno. She was also the sister of Delta Zakuro a other one of the legendary bladers and that's when Lain Valhalla had challenged her to a blading match, and because of Lain's pure and brutal strength, Crystal's beyblade was destroyed...

Shu was apparently walking by and saw what happened. He recognized Crystal immediately because of her legendary blader status...but when Shu walked to her to see what happened she was holding her destroyed beyblade caused by Lain.

"Um...hey you're Crystal right? One of the legendary bladers correct?"

Shu asked trying to be stoic, but deep down he felt concerned for her.