Hiroto Kyoguchi (京口 紘人) is a retired Japanese professional boxer who competed from 2016 to 2025. Born on November 27, 1993, in Izumi, Osaka, Japan, he is celebrated as a two-weight world champion, holding both the IBF mini-flyweight and WBA (Super) light-flyweight titles during his remarkable career.
Kyoguchi became known for his explosive power, sharp footwork, and ability to adapt across weight classes. Over nearly a decade of competition, he established himself as one of Japan’s most consistent and respected world champions, finishing his career with 19 wins (12 KOs) and 3 losses.
His Salary and Net Worth
As of 2025, Hiroto Kyoguchi’s net worth is estimated to be around $1 million USD. His income came primarily from fight purses, sponsorship deals, and promotional appearances in Japan and abroad.
While Japanese fighters in lower weight divisions typically earn less than heavyweights or global stars, Kyoguchi’s international exposure, particularly through his deal with Matchroom Boxing, significantly boosted his income.
Salary and Fight Earnings
Throughout his peak years, Kyoguchi earned between $50,000 $150,000 per major fight, depending on the location and event. His world title fights, including bouts against Jose Argumedo, Hekkie Budler, and Esteban Bermudez, were among his most financially rewarding.
In addition to fight purses, Kyoguchi benefited from brand endorsements, local sponsorships, and appearance fees in Japanese media.
Hiroto Kyoguchi Age and Height
Hiroto Kyoguchi was born on November 27, 1993, which makes him 31 years old as of 2025.
Height and Physical Stats
Height: 5 feet 5 inches (165 cm)
Reach: Approximately 163 cm
Weight Class: Mini-flyweight (105 lbs), Light-flyweight (108 lbs), and Flyweight (112 lbs)
Kyoguchi’s compact build gave him strong balance and power at close range, allowing him to dominate shorter exchanges and outwork taller opponents with sharp combinations.
Hiroto Kyoguchi’s Wife or Girlfriend
Kyoguchi has kept his personal life private, and little official information is available regarding his relationship status.
According to some media reports, he married a woman named Aki in early 2024. She is said to be a sports nutrition specialist who supported his diet and training throughout his later career.
However, Kyoguchi himself has not publicly confirmed these details, so his marital status remains private.
He is known for maintaining a disciplined, low-profile personal life, focusing primarily on boxing and fitness.
His Latest Career News
In July 2025, Hiroto Kyoguchi officially announced his retirement from professional boxing at the age of 31.
In his farewell message, he stated:
“I’ve had a career that went beyond what I imagined. I’m truly happy to end it here. Boxing has been a wonderful life. Boxing is the best.”
Final Fights
Kyoguchi’s last professional appearance was in March 2025, where he faced Anthony Olascuaga for the WBO Flyweight Title. Although he lost by unanimous decision, his performance was highly praised for its resilience and technique.
Before that, he had moved up from light-flyweight to flyweight in 2023, debuting with a dominant win over Roland Jay Biendima. He also had two close fights with Vince Paras in 2024, splitting one win and one loss.
Post-Retirement Plans
After retiring, Kyoguchi expressed interest in working as a boxing commentator, coach, or analyst, continuing to contribute to Japan’s growing boxing culture.
His Achievements
IBF Mini-Flyweight Champion (2017–2018):
Won the title by defeating Jose Argumedo and defended it successfully before vacating the belt due to weight challenges.WBA (Super) & The Ring Light-Flyweight Champion (2018–2022):
Captured both titles by stopping Hekkie Budler in the 10th round and went on to defend them multiple times.Multiple Successful Title Defenses:
Defeated top contenders such as Satanmuanglek CP Freshmart and Tetsuya Hisada, showcasing consistent dominance in his division.International Exposure:
Became one of the few Japanese boxers to fight and win abroad, competing in Mexico and the United States.Total Record:
19 Wins, 3 Losses, 12 Knockouts
Kyoguchi’s combination of discipline, tactical intelligence, and courage made him one of Japan’s most admired champions of the modern era.
His boxing career, net worth, age, height, family, salary, and biography
| Category | Details |
|---|---|
| Full Name | Hiroto Kyoguchi (京口 紘人) |
| Nickname(s) | Mad Boy, Dynamite Boy |
| Date of Birth | November 27, 1993 |
| Age (2025) | 31 years |
| Birthplace | Izumi, Osaka, Japan |
| Height | 5 ft 5 in (165 cm) |
| Reach | 163 cm |
| Weight Class | Mini-Flyweight, Light-Flyweight, Flyweight |
| Stance | Orthodox |
| Professional Debut | April 17, 2016 |
| Total Fights | 22 |
| Wins | 19 |
| Losses | 3 |
| Knockouts (KOs) | 12 |
| Major Titles | IBF Mini-Flyweight (2017–2018), WBA (Super) & The Ring Light-Flyweight (2018–2022) |
| Promoter | Matchroom Boxing (from 2020) |
| Net Worth (2025) | Approximately $1 million USD |
| Marital Status | Reportedly married (unconfirmed) |
| Nationality | Japanese |
| Religion | Not publicly disclosed |
| Retirement Year | 2025 |
| Highest Ranking | No. 1 Light-Flyweight (WBA & The Ring) |
| Education | Osaka University of Commerce (unofficially reported) |
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FAQs About Hiroto Kyoguchi
When did Hiroto Kyoguchi make his professional debut?
He made his professional debut on April 17, 2016, with a second-round knockout victory over Narathip Sungsut.
What is Hiroto Kyoguchi’s height?
He stands at 5 feet 5 inches (165 cm) tall.
Which titles has he won?
He held the IBF Mini-Flyweight title and later became the WBA (Super) & The Ring Light-Flyweight Champion.
What is Hiroto Kyoguchi’s record?
His professional record is 19 wins (12 by KO) and 3 losses.
Is Hiroto Kyoguchi married?
His marriage is not publicly confirmed, though one report mentioned a wife named Aki.
What is his estimated net worth?
As of 2025, his net worth is estimated at around $1 million USD.
Has Hiroto Kyoguchi retired?
Yes. He retired in July 2025 after nearly nine years of professional boxing.
What’s his nickname?
He is often nicknamed “Mad Boy” and “Dynamite Boy.”
What will he do after retirement?
He plans to remain involved in the sport as a commentator or boxing coach.
Final Words
Hiroto Kyoguchi’s journey from Osaka to world champion status is a story of dedication, discipline, and pure love for the sport. From his early debut to his world titles and eventual retirement at 31, Kyoguchi proved that greatness is not defined by size but by determination.
Even in retirement, his name continues to inspire the next generation of Japanese and Asian boxers, who strive to make their mark on the global stage.
