# Kotetsu Boku

Park Kwang-cheol (Korean: 박광철; Hanja: 朴光哲), better known by his Japanese name Kotetsu Boku (朴 光哲, Boku Kotetsu), is a retired Japanese-born South Korean mixed martial artist and kickboxer, competing in the Featherweight division of Rizin Fighting Federation. He has mostly fought in Shooto, where he was the Shooto Pacific Rim Welterweight Champion, but has also fought in ONE Championship, DREAM, King of the Cage, S-Cup, Cage Force and K-1 HERO'S. Boku is also a former ONE Lightweight World Champion.

## Career
### Shooto

Boku made his professional debut against Dutch fighter Marc Duncan at Shooto: GIG East 7 on November 26, 2001, and won by submission in the second round. He also won his next two fights, against Takuhito Hida and Mitsuo Matsumoto, before losing to Takaharu Murahama at Shooto: Treasure Hunt 6 on May 5, 2002. He won his next fight against Toniko Junior, but again suffered a setback by losing the following two fights against Mitsuhiro Ishida and Kenichiro Togashi. Boku then had another four fights in Shooto, winning all four, before transferring to K-1 Hero's in 2005. He was the Shooto Pacific Rim Welterweight Champion, but vacated his title when he left for K-1 Hero's.

### K-1 HERO'S

Boku's K-1 HERO'S debut came against Brazil's former WEC Lightweight Champion Hermes Franca at HERO'S 3 on September 7, 2005, and he won by majority decision. His next, and last, K-1 HERO'S bout took place on August 5, 2006 at HERO'S 6 against Alexandre Franca Nogueira. He also won this, by unanimous decision. After this, Boku returned to Shooto for one fight, a draw against Kenichiro Togashi at Shooto: Back to Our Roots 1. He then joined Greatest Common Multiple in 2007.

### Cage Force

Finland's Jarkko Latomaki was Boku's first opponent in Cage Force. They faced each other at GCM: Cage Force 2 on March 17, 2007, and Boku came away the victor after knocking Latomaki out with an elbow in the first round. He then fought at Cage Force 3, 4 and 5, winning all but one fight which he lost to Artur Oumakhanov. After this, he went into DREAM for one fight. It was a loss to Joachim Hansen at the DREAM Lightweight Grand Prix 2008 Opening Round on March 15, 2008.

### Return to Shooto

2009 saw Boku return to Shooto. His first fight was against then-Shooto Lightweight Champion Yusuke Endo in a non-title fight on January 18, and ended in a draw. He then fought Yutaka Ueda, and won, before taking on Endo again in a rematch which was a title-challenge this time. This took place at Revolutionary Exchanges 2 on September 22, and Boku was submitted in the first round. He then took on Yukio Sakaguchi at Revolutionary Exchanges 3 and won by TKO in round 1.

### ONE Championship

On September 18 it was announced that Boku had signed with the Singapore-based ONE Championship and would be fighting Zorobabel Moreira for the ONE FC Lightweight Championship at ONE Fighting Championship: Rise of Kings. Boku faced Zorobabel Moreira for the inaugural ONE FC Lightweight Championship on October 6, 2012. Boku managed to endure vicious leg kicks throughout the majority of the fight to eventually earn an upset comeback TKO over Moreira early in the third round.
Boku lost his ONE FC Lightweight Championship to Shinya Aoki at ONE Fighting Championship: Kings and Champions on April 5, 2013. Aoki fought to avenge his Evolve MMA teammate Moreira, and forced Boku to submit at 2:01 during round 2 with a rear-naked choke.
Boku faced Arnaud Lepont at ONE FC 14 on March 14, 2014. He won the fight via TKO in the first round.

### Rizin Fighting Federation

On February 24, 2020, it was revealed that Boku had signed with Rizin Fighting Federation. He made his Rizin debut against Jin Aoi at Rizin 23, where lost by unanimous decision. Boku was next scheduled to face Rikuto Shirakawa at Rizin 25. He lost to Shirakawa via third-round technical knockout and subsequently retired from the sport.

## Championships and accomplishments

* Shooto
** Shooto Welterweight Pacific Rim Championship (One time)
* ONE Championship
** ONE Lightweight World Championship (One time, first)

## Personal life

Boku is also a tattoo artist and has a tiger and turtle ship tattooed on his torso. He is a vegan.
A Zainichi Korean originally of ancestral Chōsen citizenship, Boku acquired South Korean nationality in 2004.

## Mixed martial arts record

Professional record breakdown :
| 44 matches | 26 wins | 16 losses |
| By knockout | 13 | 3 |
| By submission | 1 | 6 |
| By decision | 12 | 7 |
| Draws | 2 | 2 |
| Res. | Record | Opponent | Method | Event | Date | Round | Time | Location | Notes |
| Loss | 26–16–2 | Rikuto Shirakawa | TKO (punch and soccer kick) | Rizin 25 – Osaka | November 21, 2020 | 3 | 4:19 | Osaka, Japan | |
| Loss | 26–15–2 | Jin Aoi | Decision (unanimous) | Rizin 23 | August 10, 2020 | 3 | 5:00 | Yokohama, Japan | |
| Loss | 26–14–2 | Thanh Le | KO (punches) | ONE: Dreams of Gold | August 16, 2019 | 1 | 1:28 | Bangkok, Thailand | |
| Loss | 26–13–2 | Bruno Pucci | Submission (rear-naked choke) | ONE: Eternal Glory | January 19, 2019 | 1 | 3:32 | Jakarta, Indonesia | |
| Loss | 26–12–2 | Christian Lee | KO (slam) | ONE: Warriors of the World | December 9, 2017 | 1 | 3:24 | Bangkok, Thailand | |
| Win | 26–11–2 | Eric Kelly | TKO (punches) | ONE: Kings & Conquerors | August 5, 2017 | 3 | 3:27 | Macau, SAR, China | |
| Win | 25–11–2 | Timofey Nastyukhin | TKO (doctor stoppage) | ONE: Defending Honor | November 11, 2016 | 1 | 5:00 | Kallang, Singapore | |
| Loss | 24–11–2 | Jadamba Narantungalag | Technical Submission (Von Flue choke) | ONE: Ascent To Power | May 6, 2016 | 3 | 1:27 | Kallang, Singapore | |
| Win | 24–10–2 | Vincent Latoel | TKO (elbows and punches) | ONE: Tribe of Warriors | February 20, 2016 | 2 | 4:04 | Jakarta, Indonesia | |
| Win | 23–10–2 | Major Overall | TKO (punch) | ONE: Pride of Lions | November 13, 2015 | 2 | 1:19 | Kallang, Singapore | |
| Win | 22–10–2 | Juntaro Ushiku | KO (elbows) | Pancrase 67 | May 31, 2015 | 2 | 4:49 | Tokyo, Japan | Featherweight debut. |
| Loss | 21–10–2 | Eduard Folayang | Decision (unanimous) | ONE FC: Rise of Heroes | May 2, 2014 | 3 | 5:00 | Pasay, Philippines | |
| Win | 21–9–2 | Arnaud Lepont | KO (punches) | ONE FC: War of Nations | March 14, 2014 | 1 | 4:06 | Kuala Lampur, Malaysia | |
| Loss | 20–9–2 | Vuyisile Colossa | Decision (unanimous) | ONE FC: Champions and Warriors | September 13, 2013 | 3 | 5:00 | Jakarta, Indonesia | |
| Loss | 20–8–2 | Shinya Aoki | Submission (rear-naked choke) | ONE FC: Kings and Champions | April 5, 2013 | 2 | 2:01 | Kallang, Singapore | Lost the ONE FC Lightweight Championship. |
| Win | 20–7–2 | Zorobabel Moreira | TKO (punches) | ONE FC: Rise of Kings | October 6, 2012 | 3 | 0:31 | Kallang, Singapore | Won the inaugural ONE FC Lightweight Championship. |
| Win | 19–7–2 | Shin Kochiwa | KO (punch) | Shooto: 8th Round | July 16, 2012 | 1 | 1:07 | Tokyo, Japan | |
| Loss | 18–7–2 | Kuniyoshi Hironaka | Decision (unanimous) | Shooto: Shootor's Legacy 3 | July 18, 2011 | 3 | 5:00 | Tokyo, Japan | For the vacant Shooto Welterweight Championship. |
| Win | 18–6–2 | Yukinari Tamura | Decision (unanimous) | Shooto: Shootor's Legacy 1 | January 10, 2011 | 3 | 5:00 | Tokyo, Japan | |
| Win | 17–6–2 | Yoshihiro Koyama | Decision (unanimous) | Shooto: The Way of Shooto 3: Like a Tiger, Like a Dragon | May 30, 2010 | 3 | 5:00 | Tokyo, Japan | |
| Win | 16–6–2 | Tony Hervey | Decision (unanimous) | KOTC: Toryumon | January 30, 2010 | 3 | 5:00 | Okinawa, Japan | |
| Win | 15–6–2 | Yukio Sakaguchi | KO (punch) | Shooto: Revolutionary Exchanges 3 | November 23, 2009 | 1 | 1:54 | Tokyo, Japan | |
| Loss | 14–6–2 | Yusuke Endo | Submission (rear-naked choke) | Shooto: Revolutionary Exchanges 2 | September 22, 2009 | 1 | 3:17 | Tokyo, Japan | For the Shooto Welterweight Championship. |
| Win | 14–5–2 | Yutaka Ueda | TKO (punches) | Shooto: Shooto Tradition Final | May 10, 2009 | 1 | 4:56 | Tokyo, Japan | |
| Draw | 13–5–2 | Yusuke Endo | Draw (majority) | Shooto: Shooto Tradition 5 | January 18, 2009 | 3 | 5:00 | Tokyo, Japan | |
| Loss | 13–5–1 | Joachim Hansen | Decision (unanimous) | Dream 1: Lightweight Grand Prix 2008 First Round | March 15, 2008 | 2 | 5:00 | Saitama, Japan | |
| Loss | 13–4–1 | Artur Oumakhanov | Decision (split) | GCM: Cage Force 5 | December 1, 2007 | 3 | 5:00 | Tokyo, Japan | |
| Win | 13–3–1 | Eiji Mitsuoka | Decision (split) | GCM: Cage Force 4 | September 8, 2007 | 3 | 5:00 | Tokyo, Japan | |
| Win | 12–3–1 | David Gardner | Decision (unanimous) | GCM: Cage Force 3 | June 9, 2007 | 3 | 5:00 | Tokyo, Japan | |
| Win | 11–3–1 | Jarkko Latomaki | TKO (punches and elbows) | GCM: Cage Force 2 | March 17, 2007 | 1 | 2:33 | Tokyo, Japan | |
| Draw | 10–3–1 | Kenichiro Togashi | Draw (split) | Shooto: Back To Our Roots 1 | February 17, 2007 | 3 | 5:00 | Yokohama, Japan | |
| Win | 10–3 | Alexandre Franca Nogueira | Decision (unanimous) | HERO'S 6 | August 5, 2006 | 2 | 5:00 | Tokyo, Japan | |
| Win | 9–3 | Hermes França | Decision (majority) | HERO'S 3 | September 7, 2005 | 2 | 5:00 | Tokyo, Japan | |
| Win | 8–3 | Ryan Bow | Decision (majority) | Shooto: 1/29 in Korakuen Hall | January 29, 2005 | 3 | 5:00 | Tokyo, Japan | Won the Shooto Pacific Rim Welterweight Championship. |
| Win | 7-3 | Takaharu Murahama | Decision (Unanimous) | Shooto: 9/26 in Kourakuen Hall | September 26, 2004 | 3 | 5:00 | Tokyo, Japan | |
| Win | 6-3 | Kohei Yasumi | Decision (unanimous) | Shooto 2004: 1/24 in Korakuen Hall | January 24, 2004 | 3 | 5:00 | Tokyo, Japan | |
| Win | 5–3 | Naoki Matsushita | TKO (punches) | Shooto: Gig Central 4 | September 21, 2003 | 2 | 1:15 | Nagoya, Japan | |
| Loss | 4–3 | Kenichiro Togashi | Submission (armbar) | Shooto 2003: 6/27 in Hiroshima Sun Plaza | June 27, 2003 | 1 | 2:48 | Hiroshima, Japan | |
| Loss | 4–2 | Mitsuhiro Ishida | Decision (unanimous) | Shooto: 2/6 in Kitazawa Town Hall | February 6, 2003 | 2 | 5:00 | Tokyo, Japan | |
| Win | 4–1 | Toniko Junior | TKO (punches) | Shooto: Treasure Hunt 8 | July 19, 2002 | 1 | 4:50 | Tokyo, Japan | |
| Loss | 3–1 | Takaharu Murahama | Submission (kneebar) | Shooto: Treasure Hunt 6 | May 5, 2002 | 2 | 3:17 | Tokyo, Japan | |
| Win | 3–0 | Mitsuo Matsumoto | Decision (unanimous) | Shooto: Treasure Hunt 4 | March 13, 2002 | 2 | 5:00 | Tokyo, Japan | |
| Win | 2–0 | Takuhito Hida | Decision (unanimous) | Shooto: Treasure Hunt 2 | January 25, 2002 | 2 | 5:00 | Tokyo, Japan | |
| Win | 1–0 | Marc Duncan | Submission (armbar) | Shooto: Gig East 7 | November 26, 2001 | 2 | 3:15 | Tokyo, Japan | |

## Kickboxing record

1 Win (0 (T) KO's, 1 decision), 3 Losses :
| Date | Result | Record | Opponent | Event | Method | Round | Time |
| July 20, 2005 | Loss | 1-3 | Akeomi Nitta | K-1 World MAX 2005 Championship Final, Yokohama, Japan | Decision (Unanimous) | 3 | 3:00 |
| May 4, 2005 | Loss | 1-2 | Sam Stout | K-1 World MAX 2005 World Tournament Open, Tokyo, Japan | Decision (Unanimous) | 4 | 3:00 |
| April 2, 2000 | Loss | 1-1 | Humio Yoshikawa | K-2000 Monster Challenge Final, Japan | Decision | 1 | 3:00 |
| April 2, 2000 | Win | 1-0 | Hiroki Ryu | K-2000 Monster Challenge Semi-Final, Japan | Decision | 1 | 2:00 |