Ippo trains for a rematch.

Ippo fights and wins his second match via K.O.,After the fight he was befriended by Umezawa, his former bully.

At sunset, While Ippo's mother prepares the material for fishing, it can hardly his training, sorry for being late to help his mother. The next day at Kamogawa club, while everybody is training, the coach delivers some news: Aoki and Kimura are registered in Class A tournament - a competition of the highest level. Ippo learns with astonishment that it is also registered for this tournament. But always with astonishment, Geromichi learns that he was included in Pro test.

The match between Volg and Ippo begins.

Makunouchi Ippo is the new Featherweight champion of Japan and is now ready for his first title defense. His opponent, the former Jr. Featherweight champion and a medical student, Sanada Kazuki. In addition to this feud, Sanada is being coached by Kamogawa's former rival, Hama Dankichi. What makes things worse is that Sanada works at the same hospital where Kumi is a nurse at and everybody at the hospital wants Sanada to win. Not only does Ippo have to defend his title, he has to reclaim his love.

Kimura finally has his championship match. It takes place at the annual champion carnival. But now he must face the intense champion, Mashiba for the Junior Lightweight championship.

The first episode of the second season starts with mostly the match of Miyata against Arnie. Shows Kimura sparring with Miyata and then the Weigh-in. Then the match is about to start, Miyata and Arnie are ready for battle!

The second episode of the second season starts off on Miyata's OPBF Title Match. With it Arnie showing his special weapon called Bloody Cross and Miyata throwing strong counters to escape from this techniques strange name 'Bloody Cross '.

The third episode of the second season continues on the OPBF Match with Miyata against Arnie. With almost everytime Miyata is about to fall down from hits of the champ, but then he tooks big step and takes the OPBF Champion Arnie Gregory to the ground. The count starts, and the episode ends.

Miyata Ichirou wins the title of OPBF Featherweight Champion, but now Ippo feels even further from him than before. After his match, Date Eiji's second Title Match against Ricardo Martinez is officially finalized, after seven years. As they look at the boxing magazine, the coach comes in and says that Ricardo Martinez has requested a sparring match with Ippo.

Ippo comes to the sparring match against Ricardo Martinez as focused as if it were a real match, and he is determined to land at least one hit on the World champion. However, Martinez's lightning-fast lefts and instant reflexes are like nothing Ippo's ever seen. Will Ippo's Dempsey Roll work on the strongest man in the world?

After seven years Eiji Date will finally have his rematch with Ricardo Martinez, the world featherweight champion. The title match begins, Date starts the match off with two lefts, the second landing on the champion's face.

The world featherweight title match has begun, in the first round, neither Date or Martinez use their rights. The second round is more exciting than the first. In the third round, Martinez steps it up and becomes more aggressive.

Date tries the heart-breaker shot but Martinez blocks it with his elbow breaking Date's hand. By the end of the round Date's hand, jaw, and ribs are broken. After ten rounds the match has a winner.

The Kamogawa Boxing Gym gets a new recruit: Itagaki Manabu, the inter-high national runner up who happens to idolizes Ippo. Meanwhile, Ippo is hit with a blast from the past when he is challenged by Hammer Nao, his former junior who now seeks to defeat him and take his belt.

Ippo is reluctant to fight Nao, who used to be his junior and friend. Nao faces his fear of fighting Ippo and resolves to let Ippo know how strong he has become firsthand. Who will come out on top?

The match begins. Ippo goes on an all-out offensive, hoping to end this match as soon as possible, but Nao refuses to stay down until he has shown Ippo his new power! Nao makes use of relentless and forceful body blows, pushing Ippo into a corner.

Ippo lowers his guard and it becomes a blow-for-blow confrontation, with Ippo winning out and knocking Nao down. Nao reflects on his past with Ippo as he gets up once more, only to be ultimately knocked out. Ippo remarks that Nao hasn't felt the pain of losing yet, and now that he has, he will become much stronger.

Makunouchi Ippo defeated Sendou Takeshi with his Dempsey Roll and became the Japanese Featherweight Champion! Reflecting on his recent title defenses, Ippo reminisces about his late father Kazuo, and his own desires to be as strong as his dad was.

With his title on the line, Ippo goes toe-to-toe with Shimabukuro. The battle is so intense Ippo doesn’t even have room to breathe, to the point he starts turning blue! With Ippo struggling at the “bottom of the ocean,” has Shimabukuro met his goal of destroying the Dempsey Roll?!

Ippo emerges victorious after a vicious war with Shimabukuro, and Itagaki’s sister Nanako comes to pay him a visit at home while he rests. Meanwhile, Aoki is busy preparing for his first ever title match against the lightweight champion Imae Katsutaka.

Imae’s long hours of research quickly pay off as he decimates Aoki by countering every one of his trademark attacks, even the Frog Punch! As Tomiko watches on and the crowd awaits the inevitable knockout, Aoki does something that leaves the whole arena in shock.

Sendou Takeshi, the "Naniwa Tiger," returns to the ring! But it's his sparring partner, Sawamura Ryuuhei, who knocks Ippo for a loop when he calls the Dempsey Roll a "clumsy technique" and declares he's gunning for the Featherweight Title!

Ippo's next title defense is confirmed to be against Sawamura Ryuuhei, and after realizing the Dempsey Roll is vulnerable to counter punches, Ippo realizes he doesn't stand a chance. His only option is to somehow evolve the Dempsey Roll into a more effective move, but as he mulls over exactly how to do it, a surprisingly familiar face appears in front of him.