Gon Freecs, a young boy that lives on a small island learns that his father who he doesn’t remember is an extremely famous man and has become somewhat of an amazing hunter. Gon takes the hunter exam to seek out his amazing father, but on the way while teaming up with 3 other candidates, Kurapica, Leorio, and Killua, he learns that there is more to becoming a hunter and the challenges that he must face will be beyond his imaginations. Twelve-year-old Gon Freecss one day discovers that the father he had always been told was dead was alive and well. His Father, Ging, is a Hunter–a member of society’s elite with a license to go anywhere or do almost anything. Gon, determined to follow in his father’s footsteps, decides to take the Hunter Examination and eventually find his father to prove himself as a Hunter in his own right. But on the way, he learns that there is more to becoming a Hunter than previously thought, and the challenges that he must face are considered the toughest in the world.

Following the end of the Holy Road soccer tournament, Matsukaze Tenma returns to Raimon Junior High after a break, only to find out that all of his friends and teammates no longer play soccer, and the soccer club apparently doesn't exist. He is soon after approached by a mysterious person called Alpha who reveals himself to be a time traveler (from an organization in the future known as El Dorado) on a mission to destroy soccer. Together with the help of Fey Rune, Tenma must travel through time and save soccer before El Dorado rids the world of it forever.

Sakamichi Onoda is an otaku who just wants to find more people to join the recently disbanded anime club with him. However, when a couple cyclists spy his skill in riding the bulky mamachari bike he's had since youth, they attempt to convince him to join the bicycle racing club instead. 

After intense battles, defeating Sendo, Makunouchi Ippo finally grasped the place as the Japanese Feather-Weight Champion. And so, Ippo changes from a "Challenger" to a "Champion", and the opponent of his first defence match is decided. The name of the challenger was Sanada Ikki. A fierce opponent who, aiming for a Dual Class Conquest, returned the title of Junior- Feather Class.Sanada has a different face as a Current Medical University Student, which enables the intimate understanding of the human body, of where a punch should land to deprive stamina and to down the opponent with consistent damage. Furthermore, he coolly analyses his condition from a medical perspective, based on his amount of perspiration, breathing rate and heart rate, and is thus a boxer with one of the most intelligent tactics. On the other hand, Ippo, in front of his first defence match, not only is nervous but suffers progressively from fear and anxiety as he hears more about his opponent. Furthermore, Sanada Ikki's trainer was Hama Dankichi, the rival of Chairman Kamogawa when he was still active in the ring. Dankichi's special move in the days when he still fought, "Hien" ("Flying Swallow"), has been passed down to Ikki.Encouraged by the predecessors of the gym Ippo belongs to, Takamura and Kimura, his past opponent and his mother, watched upon by Kumi who he secretly has feelings towards, the date of the first defence match draws closer. Ippo versus Sanada, and the settling of the scores of the coaches, Chairman Kamogawa and Hama Dankichi, each of their thoughts crosses over, and now, the day of the decisive match arrives!Can Ippo dodge the "Hien" and find victory?