According to the background setting of the original work, the two never met each other after they separated. Killua took Gon on the Alluka tour and followed Jin on adventures until one day Gon fell into a canyon. Gon, who originally thought he was dead, woke up and found himself in the Republic of Bartokia. Here he met Killua, who had not met him when he was twelve years old and continued his career as a killer. Faced with Killua's incorrect outlook on life (crossed out), Gon once again started as a friend and corrected Killua's outlook on life bit by bit (not...)