Kiku and Ryuji take over their late father’s ambition of becoming a boxing champion. As his sister trains him, Ryuji progresses physically and mentally and he finally meets his destined rival, Jun.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Youth That Shines | 2004-10-06 | 25 min |
| Season 1 | Episode 2 | Goodbye, the Golden Fist | 2004-10-13 | 25 min |
| Season 1 | Episode 3 | Thy name is Boomerang | 2004-10-20 | 25 min |
| Season 1 | Episode 4 | Champion Carnival Begins | 2004-10-27 | 25 min |
| Season 1 | Episode 5 | Groan! The Boomerang Hook | 2004-11-03 | 25 min |
| Season 1 | Episode 6 | Rolling Thunder | 2004-11-10 | 25 min |
| Season 1 | Episode 7 | Tomorrow | 2004-11-17 | 25 min |
| Season 1 | Episode 8 | A Man's Determination | 2004-11-24 | 25 min |
| Season 1 | Episode 9 | Thunder and Boomerang | 2004-12-01 | 25 min |
| Season 1 | Episode 10 | Gong of Fate | 2004-12-08 | 25 min |
| Season 1 | Episode 11 | Navigation to Victory | 2004-12-15 | 25 min |
| Season 1 | Episode 12 | Formation! Golden Japan Jr. | 2004-12-15 | 25 min |
| Season 2 | Episode 1 | Start! Golden Japan Jr. | 2006-04-07 | 25 min |
| Season 2 | Episode 2 | Under the Oath of the Flag | 2006-04-14 | 25 min |
| Season 2 | Episode 3 | Strike! Fight Champion | 2006-04-21 | 25 min |
| Season 2 | Episode 4 | Carry the Spirit Fist | 2006-04-28 | 25 min |
| Season 2 | Episode 5 | Break Through the Storm! | 2006-05-05 | 25 min |
| Season 2 | Episode 6 | Temptation! Devil's Day | 2006-05-12 | 25 min |
| Season 2 | Episode 7 | Run Up the Musical Scale! | 2006-05-19 | 25 min |
| Season 2 | Episode 8 | Natural Born Madness | 2006-05-26 | 25 min |
| Season 2 | Episode 9 | Fierce Tiger, Rough | 2006-06-02 | 25 min |
| Season 2 | Episode 10 | Superstar | 2006-06-09 | 25 min |
| Season 2 | Episode 11 | Black Flash | 2006-06-16 | 25 min |
| Season 2 | Episode 12 | And the Boy Flaps Towards the World | 2006-06-23 | 25 min |
| Season 3 | Episode 1 | The Shadow Clan | 2010-04-02 | 25 min |
| Season 3 | Episode 2 | The Tower of Shadow | 2010-04-02 | 25 min |
| Season 3 | Episode 3 | Gathered Again! Golden Japan Junior | 2010-05-07 | 25 min |
| Season 3 | Episode 4 | Bloody Fight! Thousand Miles' Slope | 2010-05-07 | 25 min |
| Season 3 | Episode 5 | The Leader Appears | 2010-06-04 | 25 min |
| Season 3 | Episode 6 | Farewell Shadow | 2010-06-04 | 25 min |
| Season 4 | Episode 1 | His Name is Square! | 2011-04-10 | 25 min |
| Season 4 | Episode 2 | The Marvelous France | 2011-04-10 | 25 min |
| Season 4 | Episode 3 | Vollkommenheit | 2011-05-15 | 25 min |
| Season 4 | Episode 4 | Hero vs Genius | 2011-05-15 | 25 min |
| Season 4 | Episode 5 | The Flag of Oath | 2011-06-12 | 25 min |
| Season 4 | Episode 6 | Farewell, Gold Japan Jr. | 2011-06-12 | 25 min |
| Directing | Hiroshi Ikehata | Series Director |
| Sound | TATSUOLOGY | Theme Song Performance |
| Sound | Kacky | Theme Song Performance |
| Writing | Masami Kurumada | Comic Book |
| Writing | Yosuke Kuroda | Series Composition |
