Oshikiuchi - Within the ceremony

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[history]
According to oral tradition and written records, Daito-ryu was founded by Shinrasaburo Yoshimitsu of the Minamoto clan, and was a small armor handed down to the Takeda clan of Kai. When it was passed down to the Takeda clan of Aizu by Takeda Kunitsugu, a member of the clan, in 1574 (Tensho 2), local martial arts were incorporated into it and the Oshikiuchi martial arts for self-defense in the palace were established. It is said that successive feudal lords passed it down and had their chief retainers, senior vassals, pages and other inner-office staff learn it. Takeda Sokaku studied and mastered sumo, bōjutsu, Ono-ha Ittō-ryū, Hōzōin-ryū spearmanship and shurikenjutsu at a young age, while also being initiated into the Oshikiuchi by former Aizu clan chief retainer Hoshina Chikanori (Saigo Tanomo). From 1898 onwards, he called this Daito-ryu jujutsu and traveled around the country to teach it and to popularize it.

*Some of the terminology explanations that refer to "Goshikinai" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

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［歴史］
　口伝および伝書によれば，大東流は源家の新羅三郎義光を始祖とし，甲斐の武田家に伝わった小具足であった。1574年(天正2)に一族の武田国継によって会津の武田家に伝えられると，これに同地の武術をとり入れて殿中護身武芸(御式内（おしきうち）)が定められ，歴代藩主が継承して家老，重臣，小姓など奥勤めの者に習得させたといわれる。武田惣角は若くして角力，棒術，小野派一刀流，宝蔵院流槍術，手裏剣術を学び極める一方，元会津藩家老保科近悳(西郷頼母)から御式内を伝授され，1898年以降これを大東流柔術と称して，その普及のため全国を巡回指導した。…

※「御式内」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報