One month after Gon is seriously injured (and banned to directly practice Nen or be part of any match), the 2-year-lap revenge of the Nen-user Kastro against the magician Hisoka is about to start in the Sky Arena. Castro shows confidence, remembering an old saying, "not to fight If you do not have a chance of winning" in this game. Facing to the game, he is also filled with a fearless smile secretly.