First appearance: Battle 7
Age: 38-39
Height: 180cm
Weight: 80kg
Type: Sei
Type: Katsujin Ken
Martial Arts: Jujutsu and Aikijujitsu
Koetsuji Akisame is the philosophical Jujitsu master and doctor of Ryozanpaku, an old friend of Miu's father, Fuurinji Saiga. He was the first master to agree to train Kenichi, though he shows the least concern for Kenichi's feelings.
Despite his seemingly small frame, Akisame has muscles built to perfection. He possesses sharp insight into people's minds, often detecting when they are troubled or hiding something. Sometimes, he even knows what a person is thinking, which unnerves Kenichi.
Akisame has numerous hobbies and unique abilities. He is a renowned artisan who has mastered calligraphy, painting, pottery, and sculpting. He frequently invents devices that serve as training equipment for Kenichi and power sources for the dojo, such as a treadmill generator.
He runs an orthopedic clinic and can easily reset and fix bones. His extensive knowledge of medicine and anatomy led him to develop unique physical conditioning methods. His medical skills are so advanced that he once saved Apachai's life despite a gaping hole in his side, performing surgery using tools from Shigure on an airplane. Among doctors, he is known as "The Medic Demon," and they fear him.
Akisame seems to hold a grudge against James Shiba, Takeda's master, evident from James's frequent insults about Akisame's mustache. This rivalry escalated to a point where they bet their mustaches would be shaved if their disciple lost the match.

koetsuji akisame
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Fuurinji Hayato
Main
First appearance: Battle 6Type: Dou/SeiType: Katsujin KenMartial Arts: Knowing him, probably everything (explained by his ability to copy all of the enemys moves easily)Hayato is Mius grandfather and the undefeated elder of the Ryōzanpaku Dojo, who is sai...
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Hopachai Apachai
Main
First appearance: Battle 7Age: 28-29Height: 201cmWeight: 120kgType: DouType: Katsujin KenMartial Arts: Muay Thai and Muay BoranApachai is known as the Muay Thai "Shinigami" and Muay Thai master at the Ryozanpaku. He is also shown to have been trained in M...
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Koetsuji Akisame
Main
First appearance: Battle 7Age: 38-39Height: 180cmWeight: 80kgType: SeiType: Katsujin KenMartial Arts: Jujutsu and AikijujitsuKoetsuji Akisame is the philosophical Jujitsu master and doctor of Ryozanpaku who was an old friend of Miu's father, Fuurinji Saig...
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Kousaka Shigure
Main
First Appearance: Battle 7Age: 22-23Height: 159 cmType: SeiType: Katsujin KenMartial Arts: Kosaka Style (All Weapons)Shigure is a mysterious person and a slow talker. She is also a master of all types of weapons and believes that weaponry should be seen a...
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Ma Kensei
Main
First appearance: Battle 7Age: 41-42Height: 158cmWeight: 53kgType: SeiType: Katsujin KenMartial Arts: All Chinese Kenpo (preferred fighting style is soft forms)Kensei is the lecherous master of all Chinese Kenpo, who prefers to fight using soft forms and ...
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Sakaki Shio
Main
First appearance: Battle 7Age: 29-30Height: 192cmWeight: 110kgType: DouType: Katsujin KenMartial Arts: Karate (specializes in Mutenkendoku-style)Sakaki Shio is infamously known as the 100-Dan Street Brawler of Karate and is one of the masters of Ryozanpak...
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Shirahama Kenichi
Main
First appearance: Battle 1Age: 17Type: Sei (also shown Dou-Type traits)Type: Katsujin KenMartial Arts: Kenichi's Fighting Style (hybrid of Karate, Jujutsu, Chinese Kenpo, Muay Thai, Kosaka Style (Weapons), and Furinji Style)Shirahama Kenichi is good-natur...
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Aisha
Supporting
* First appearance: Battle 235* Type: Sei* Type: Katsujin Ken* Martial Arts: CapoeiraAisha is the only female member of the Capoeira Team during the D of D tournament. She harbors romantic feelings towards her team leader. At the same time, she completely...








