After learning how to use Shu, the three make it to Masadora, only to be told to head back to the rocky area again to obtain the remaining monster cards there. They each catch a few and then they move on to the hardest monster in the area, the bubble horse. They get the card by dodging the white bubbles with Zetsu, and the red bubbles with Ten. Gon and Killua also learn Ko, Ken and Ryu. Biscuit believes they are now ready for the final stage of their training: practicing in the individual categories, starting with the Enhancer category...