After many trials together, Gon and his friends end up passing the exam except for Killua, who fails after killing another applicant due to the influence of his brother, Illumi, and runs away to his family's estate in shame. After Gon and the others convince Killua to rejoin their side, Leorio and Kurapika depart temporarily for their own personal reasons, while Gon and Killua set for the , a skyscraper where thousands of martial artists compete daily in fighting tournaments, seeking to improve themselves and gain monetary rewards. There they meet Zushi, a fellow Heavens Arena applicant, who has a kung fu master named Wing who trains them in utilizing Nen, a Qi-like life energy used by its practicers to manifest parapsychological abilities, and is also considered to be the final requirement to pass the Hunter Exam. Sometime later, Gon and his friends reunite again in where they have a clash with the Phantom Troupe. During the occasion, two from the band of thieves are killed by Kurapika and he is forced to give up the chance of hunting down the rest in order to rescue Gon and Killua from captured, but not without succeeding in sealing the powers of their leader, Chrollo Lucilfer. A few days later, Gon and Killua achieve their objective and begin playing Greed Island, an extremely rare and expensive video game with Nen-like properties following some clues about Ging's whereabouts. While exploring the game, it is revealed that its scenario is actually set somewhere in the real world, created with Nen by a team led by none other than Ging himself. Outclassed by the challenges in the game at first, they are soon joined and trained by Biscuit Krueger, an experienced teacher of Nen and kung fu master. With Biscuit's help, Gon and Killua train their Nen and learn to shape their abilities to their traits. Killua takes a short break from Greed Island to apply for the Hunter Examination again, this time passes with success. The trio then complete the game together against all odds and Gon obtains the right to choose the artifacts from the game necessary to reunite with his father. Gon decides to have Killua accompany him to meet his father using the artifacts, but the duo are sent to meet Kite instead. They decide to help with Kite's research of a man-sized Chimera Ant queen, an insect that devours other