nine ryu
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Koto Ryu (Knocking Down the Tiger School) specialises in koppojutusu or using the body structure
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Gyokko Ryu (Jewelled Tiger School) specialises in kosshijutsu or using nerve strikes, tendons
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Shinden Fudo Ryu (Divine Transmission of Immovability School) specialises in dakentaijutsu or specialised hard striking
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Kukishinden Ryu (Nine Demons' Divine Transmission School) specialises in happo hikenjutsu or eight secret weapons art
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Togakure Ryu (Hidden Door School) specialises in ninjutsu or stealth, concealment, hidden weapons
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Takagi Yoshin Ryu (High Willow Tree Spirit School) specialises in jujutsu
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Gikan Ryu (Clear Truth and Justice School) specialises in koppojutsu*
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Kumogakure Ryu (Hidden Cloud School) specialises in ninjutsu*
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Gyokushin Ryu (Pearl Heart School) specialises in ninjutsu*