What to read after Hunter x Hunter, Vol. 8?

Gon's going home to share his Hunter success with Aunt Mito, but Whale Island has a surprise in store for Gon--a message from his father to "come and find me." The only clues Gon has to go on are a strange ring and a JoyStation memory card for the video game Greed Island. But the game is so rare it can only be found at the Yorknew auction--for an astronomical price. And anyone who plays gets sucked into the game, never to return! Is that where Ging has gone? Gon needs to earn enough money to make a bid on the game, but there's not much time left. And the evil Phantom Troupe have plans of their own for the auction...