Okubo Naoya
Okubo Naoya the King of Combat
Kanji: 大久保 直也
Romaji: Ōkubo Naoya
Epithet: "The King of Combat"
Status: Alive
Height: 195cm[1]
Weight: 116kg[1]
Gender: Male
Affiliations: Muji TV
Kengan Wins: 0
Kengan Losses: 1[2]
Manga Debut: Chapter 31
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Okubo Naoya (大久保 直也, Ōkubo Naoya; "Naoya Okubo"), also known as "The King of Combat" is the Absolute Champion of Ultimate Fight and the affiliated fighter for Muji TV in the Kengan Annihilation Tournament.


Okubo is an extremely muscular, powerful-looking individual of great height, around Kanoh Agito's height. He has a plain round face, with subtle tear-troughs, short cropped brown hair and a lack of facial hair.


Okubo is a goofy and unwise person, losing his cool when playing Shogi. With a similar personality to Rihito, who he gets along well with, he is also a pervert.


Having just signed a contract for "Ultimate Fight" (the biggest MMA promotion in the world), Okubo appeared in a documentary where he dropped his infamous bombshell. His incendiary statement took the world by storm but, despite the backlash it got him, Okubo finally ended up becoming the first Japanese heavyweight of Ultimate Fight.[1]


Okubo was first seen deep in thought while playing shogi against Kaneda Suekichi. Quickly losing afterwards, he cursed his inability to defeat Kaneda at the game. When Yamashita Kazuo stepped up to play Kaneda, Okubo cheered him on though Yamashita ended up losing as well. With Kaneda then suddenly leaving, another man stepped up to challenge Okubo instead (and ended up beating him as well). After soon arriving at Ganryu Island, and seeing all the beautiful women around, he and Rihito dived right in.

On the day of the tournament, Okubo, Rihito, Kaneda and Himuro observed the ensuing first round fights together. Before Kure Raian's fight against Mokichi Robinson, the group had to calm down a raging Rihito after the latter had been accosted by Raian. In the final match of the first round of the Kengan Annihilation Tournament, representing Muji TV, Okubo faced Kanoh Agito. While fighting Kanoh, he began to feel like he was at a disadvantage, causing Okubo to rapidly change his style of punching, throwing and grappling; as a result Okubo began dominating as Kanoh couldn't keep up. But in the end, Kanoh "evolved" and defeated Okubo with his own MMA style.

Power & AbilitiesEdit

Okubo is an MMA champion with a record of 26 wins out of 26 and not a single opponent making it to the final round against him.[1] With immense strength and endurance, Tokita Ohma could clearly recognise that Okubo was the most powerful of the 'four stooges' (a group consisting of Okubo, Rihito, Himuro and Kaneda).[1] He's also very good at grappling, his speciality. Okubo's strongest weapon aren't flashy moves, but instead a combination of basic moves from grappling, punching and throwing. He usually ends fights with a kick directly to the face, which is powerful enough to kill people.

Notes & TriviaEdit

  • He is well acquainted with Murobuchi Gozo and they co-starred in a lot of sports programs before the athlete's retirement. The two have had dinner every so often ever since.[3]


  1. 1.0 1.1 1.2 1.3 1.4 Chapter 111
  2. After defeat to Kanoh Agito during the Kengan Annihilation Tournament
  3. Chapter 63