Writing
The Truth of the Calm Spirit
For more information on Kashima-shinden Jikishinkage-ryū in English, please see:
- M. Raugas, The Truth of the Calm Spirit: The practice of Shinkage-ryū Heihō as Taoist Internal Alchemy (opens in a new tab), Lulu 2025
This is a collected set of works that stem from martial arts essays centered around Shinkage-ryū, which were first hosted online at Inner Dharma.
They have been edited and expanded with discussions of historical writings on Jikishinkage-ryū, its lineage, the technical composiiton of its kata, the inner principles of the art as drawn from publicly available Japanese language documents and books and my own observations of how Taoist and Buddhist practices permeate the art.
The Kōbusho
An article on the late Tokugawa Kōbusho academy can be found at Inner Dharma (opens in a new tab).
Source Register
A consolidated, annotated register of the primary documents and secondary scholarship cited across this site. Each entry carries a short note on its provenance and evidentiary weight; primary manuscripts list their archive, shelfmark and access state. “Cited in” links each source back to the pages that use it. The register is generated at build time from a single bibliography, so it stays in step with the essays.
Primary sources
“Jikishinkage-ryū Hisho Ichi (直心影流秘書一).” n.d. Suzuka-ke monjo (鈴鹿家文書), All Japan Kendo Federation (全日本剣道連盟蔵). institutional holding. The seven kata categories including sayanouchi.
Cited in: Denkei (Formal Lineage)
Yamada Mitsunori. n.d. “Heihō Zakki (兵法雑記).” Tōkyō Naganuma Shōbee-ke (東京長沼正兵衛家蔵). family holding. Held by the Tōkyō Naganuma Shōbee house.
Cited in: Denkei (Formal Lineage)
“Fujishin-ryū heijutsu oboe (不二心流兵術覚; internal title 發氣不二心流兵術覚).” n.d. Kumamoto Prefectural Library, Tominaga-family donation (富永家寄贈 武道関係資料 剣術関係資料 II). catalogue PDF: library.pref.kumamoto.jp. Names Ōkōchi Sōshirō Fujiwara no Naonobu and Ebato Kuninoshin.
Cited in: Fujishin-ryū
靜筠二禪師 (Jing and Yun, comp.). 952 AD. 祖堂集 (Sodōshū; Zǔtáng jí). 大藏經補編 (Dazangjing bubian). B25, no. 144 · Open full-text via CBETA. Earliest extant witness in the corpus of two phrases drawn on across these essays: the Manura gāthā (its Manura chapter citing the fragmentary Baolin zhuan 寶林傳, 801, with the note 具如寶林傳也, so the ultimate origin is the lost 801 text) and the Pang–Mazu exchange 一口吸盡西江水 (in the Layman Pang entry).
Cited in: Swallow the West River in One Gulp
道原 (Daoyuan). 1004. 景德傳燈錄 (Keitoku Dentōroku; Jǐngdé chuándēng lù). 大正新脩大藏經 (Taishō Shinshū Daizōkyō). T51, no. 2076 · Open full-text via CBETA and SAT2018. Standard, most-diffused transmission of two phrases drawn on across these essays: the Manura gāthā 心隨萬境轉 (attesting the variant the densho phrase recasts, and not containing 心遍萬境; earliest extant witness is the Zutang ji, 952) and the Pang–Mazu exchange (待汝一口吸盡西江水即向汝道).
Cited in: Swallow the West River in One Gulp
圜悟克勤 (Yuanwu Keqin). 1128. 碧巖錄 (Hekiganroku; Bìyán lù) — Case 42, 龐居士好雪片片. 大正新脩大藏經 (Taishō Shinshū Daizōkyō). T48, no. 2003 · Open full-text via CBETA and SAT2018. Verses by Xuedou Chongxian (雪竇重顯) with Yuanwu’s pointer, capping phrases, and commentary; embeds the West River exchange in the Case-42 pingchang and is the most influential later vehicle for it.
Cited in: Swallow the West River in One Gulp
Ogasawara Genshinsai (小笠原源信斎). 1670. “Shin-no-Shinkage-heihō mokuroku (真之心陰兵法目録, Kanbun 10 / 1670) and menjō (免状, Kanbun 13 / 1673).” Odawara City Library (小田原市立図書館蔵).
Takahashi Shigeharu. 1686. “Keiko Hōjō Jo narabini Riuta (稽古法定序幷理歌).” Tōkyō Naganuma Shōbee-ke (東京長沼正兵衛家蔵). family holding. Held by the Tōkyō Naganuma Shōbee house.
Cited in: Denkei (Formal Lineage)
“Jikishinkage-ryū mokuroku (直心影流目録), Meiwa 5 (1768).” 1768. Waseda University, Kotenseki Sōgō Database. ケ05 01032 0001 · public scan; downloadable. Primary MS; the 1768 Meiwa-5 mokuroku of the same Waseda series. Yoshida Katsunori autograph addressed to Isaki Masaki, with verso transmission endorsements (Tenpō 14 / 1843).
“Ōga Ikken (大禾一件).” 1773. Tōkyō Naganuma Shōbee-ke (東京長沼正兵衛家蔵). family holding. Held by the Tōkyō Naganuma Shōbee house.
Cited in: Denkei (Formal Lineage)
Kawasaki Tōnojō Yoshioi. 1789. “Sayanouchi Hidensho (鞘之内秘伝書).” Suzuka-ke monjo (鈴鹿家文書), All Japan Kendo Federation. institutional holding. The 54-form sayanouchi figure; license from Naganuma Tadasato, 1789.
Cited in: Denkei (Formal Lineage)
Akaishi Gunjibei Fusuke. 1790. “Hanryūken oboegaki (斑龍軒覚書).” Manuscript.
Cited in: Akaishi Gunjibei Fusuke
“Jikishinkage-ryū Hōjō (直心影流法定) — Naganuma Tadasato; copied by Ogawa Yashichi.” 1800. Waseda University, Kotenseki Sōgō Database (早稲田大学古典籍総合データベース). ケ05 01032 0003 · public scan; downloadable. Primary MS; stable identifier. The 1800 Hōjō colophon (Naganuma Shōbee = Tadasato; copyist Ogawa Yashichi; Edo Mizaka). Part of the series ケ05 01032 0001/0002/0003 (the 1768 Meiwa-5 mokuroku; the 1768 leaf; the 1800 Hōjō).
Satō Gunbei. 1819. “Reiken denkai (霊剣傳解).” Kumamoto Prefectural Library (熊本県立図書館). · On-site; original manuscript (原). Original densho, Bunsei 2 (1819), by Satō Gunbei (佐藤郡兵衛); held at Kumamoto Prefectural Library per Karukome’s 2013 source list — single catalogue attestation, shelfmark unconfirmed.
Cited in: Akaishi Gunjibei Fusuke
“Wakadoshiyori Mōshiwatari (若年寄申渡), in Ansei 3 Gosho-tsukemen 7 (安政三年御書付面 七).” 1856. Historiographical Institute, University of Tokyo (東京大学史料編纂所) database. Primary bakufu order; Kōbusho-era documentation.
Cited in: Sakakibara Kenkichi
Takeda-ryū gungaku zensho (武田流軍学全書). 1935. Takeda-ryū Gungaku Zensho Kankōkai (武田流軍学全書刊行会).
Cited in: A Jikishinkage-ryū Densho from 1800
Wú Shū (吳殳). 2006. Shǒubì lù (手臂錄), Zegu Zhai congchao edition (泽古斋丛抄本). Shanxi Science and Technology Press (山西科学技术出版社).
“Odani-sensei gyōjōroku (男谷先生行状録).” n.d. n.d. Kumamoto Prefectural Library (熊本県立図書館). · On-site; original manuscript (原). Undated original record of Odani Nobutomo’s conduct; held at Kumamoto Prefectural Library per Karukome 2013 — compiler unidentified and date undetermined (年代未詳), shelfmark unconfirmed.
Cited in: Akaishi Gunjibei Fusuke
龐蘊 (Pang Yun). n.d. (Tang material, trad. coll. 于頔; Zokuzōkyō recension). 龐居士語錄 (Hōkoji goroku; Páng jūshì yǔlù). 卍新纂續藏經 (Manji shinsan zokuzōkyō). X69, no. 1336 · Open full-text via CBETA. Source-side record of Layman Pang carrying both the Shitou precursor and the Mazu exchange; extant recension is later, so a witness to the tradition rather than an autograph.
Cited in: Swallow the West River in One Gulp
馬祖道一 (Mazu Daoyi). n.d. (Tang material; Zokuzōkyō recension). 馬祖道一禪師廣錄 (Baso Dōitsu zenji kōroku; in the 四家語錄 Sike yulu). 卍新纂續藏經 (Manji shinsan zokuzōkyō). X69, no. 1321 · Open full-text via CBETA. Source-side recorded-sayings text of Mazu carrying the exchange; extant Zokuzōkyō recension preserving Tang material, not an independent line from the lamp records.
Cited in: Swallow the West River in One Gulp
Secondary scholarship
Naganuma Kunisato (長沼国郷). n.d. Kōdansha, Nihon Jinmei Daijiten+Plus (講談社『日本人名大辞典+Plus』), via Kotobank. Dates: 1688–1767.
Cited in: Denkei (Formal Lineage)
Jikishinkage-ryū (直心影流). n.d. Heibonsha, Kaitei-shinpan Sekai Daihyakka Jiten (平凡社『改訂新版 世界大百科事典』), entry by Nakabayashi Shinji (中林信二), via Kotobank. The Naganuma family as hereditary Numata instructors.
Cited in: Denkei (Formal Lineage)
Jikishinkage-ryū kenjutsu (直心影流剣術). n.d. Japanese Wikipedia. General lineage; the 称郷 terminus and the Kanō / Wasato note — a pointer, not a source of record.
Cited in: Denkei (Formal Lineage)
Kashima Shinden Jikishinkage-ryū — lineage tabulations. n.d. Nihon Kobudō Kyōkai (日本古武道協会) entry; Issei-kai (一誠会) "Rekidai Dōtōsha" (歴代道統者) list. Source of the formal dōtō styles. Tradition-internal house tabulations — corroborative of formal names, not independent of the line.
Cited in: Denkei (Formal Lineage)
Kashima Shinden Jikishinkage-ryū — Issei-kai (鹿島神傳直心影流 一誠会). n.d. Issei-kai homepage and "Rekidai Dōtōsha" (歴代道統者) page, https://www.isseikaiweb.com/. The hakkō ichiu preamble and the lineage list. Tradition-internal; not independent of the line.
Hakkō ichiu (八紘一宇). n.d. Japanese Wikipedia. Orientation on the slogan’s 1903 coinage by Tanaka Chigaku and its wartime adoption; corroborate against print scholarship before citing in print.
Kashima Shinden Jikishinkage-ryū Hyakuren-kai — "Kashima Jingū no kanren shisetsu" (鹿島神宮の関連施設). n.d. Hyakuren-kai (百錬会), https://100ren.jimdoweb.com/. Transcription and photographs of the 1968 founder’s stele and the four Kashima Jingū monuments. The site asserts copyright over its images; obtain permission or use your own photographs for publication. Tradition-internal source.
Ishigaki Yasuzō (石垣安造). n.d. Jikishinkage-ryū gokui denkai (直心影流極意伝開). Shimazu Shobō (島津書房). Exposition of the Jikishinkage-ryū gokui.
Zhuangzi (莊子). n.d. Columbia University Press / Hackett. Trans. Burton Watson, The Complete Works of Zhuangzi (1968; rev. 2013); or trans. Brook Ziporyn, Zhuangzi: The Complete Writings (2020).
Cited in: Eight Phases and Eight Extremes
Kazuma Kōji (数馬広二). n.d. Bakumatsu zaison kenjutsu to gendai kendō, no. 1: Fujishin-ryū / Nakamura Isshinsai (幕末在村剣術と現代剣道 第1回 不二心流・中村一心斎の巻). All Japan Kendo Federation, PR & Materials column, https://www.kendo.or.jp/knowledge/books/zaisonkenjutsu_01/. Founder’s biography (Nakamura Isshinsai / Hachihei), Asayama Ichiden-ryū and Kawara Shōshin-ryū training, the 1818 Mt. Fuji austerity and naming, the Hatchōbori dōjō.
Cited in: Fujishin-ryū
Fujishin-ryū kenjutsu (不二心流剣術) — preserved traditions. n.d. Kokusai Suigetsujuku Bujutsu Association (国際水月塾武術協会), https://japanbujut.exblog.jp/34368393. Modern-transmission pointer.
Cited in: Fujishin-ryū
Kyūdō no rekishi (弓道の歴史). n.d. All Japan Kyudo Federation (全日本弓道連盟), https://www.kyudo.jp/howto/history.html.
Cited in: Heki-ryū and the Sekka-ha
Sakakibara Kenkichi (榊原鍵吉). n.d. Kōdansha Nihon Jinmei Daijiten and Nihon Daihyakka Zensho (Nipponica), via Kotobank. Network, Kōbusho, transfer to 遊撃隊頭取 (Keiō 2 / 1866), gekiken-kōgyō, kabuto-wari.
Cited in: Sakakibara Kenkichi
Sakakibara Kenkichi (榊原鍵吉). n.d. National Diet Library, Kindai Nihonjin no Shōzō (近代日本人の肖像). Career outline and dates; confirms the 遊撃隊頭取 transfer at the Kōbusho’s 1866 closure.
Cited in: Sakakibara Kenkichi
Shimada Toranosuke (島田虎之助). n.d. Heibonsha Sekai Daihyakka Jiten (entry by Nakabayashi Shinji) and Kōdansha Nihon Jinmei Daijiten, via Kotobank. Biography, Odani tutelage, ken-shin itchi (剣心一致).
Cited in: Sakakibara Kenkichi
Totsuka Hikosuke (戸塚彦介). n.d. Nihon Daihyakka Zensho (Nipponica), via Kotobank. Dates (1813–1886), Numazu-han, "father of early-modern randori," Kōbusho jūjutsu.
Cited in: Sakakibara Kenkichi
Kanō Jigorō (嘉納治五郎). n.d. Nihon Daihyakka Zensho (Nipponica), via Kotobank. Iikubo Tsunetoshi as his Kitō-ryū teacher.
Cited in: Sakakibara Kenkichi
Shōgitai (彰義隊). n.d. JapanKnowledge (Nihon Daihyakka Zensho / Sekai Daihyakka Jiten / Kokushi Daijiten). Formation, Ueno, disbandment.
Cited in: Sakakibara Kenkichi
Takahashi Deishū (高橋泥舟). n.d. National Diet Library, Kindai Nihonjin no Shōzō. Dates (1835–1903), offices, the Three Boats of the bakumatsu.
Cited in: Sakakibara Kenkichi
Nakamura Tamio (中村民雄). n.d. Kendō Jiten: Gijutsu to Bunka no Rekishi (剣道事典 技術と文化の歴史). Shimazu Shobō (島津書房). Standard reference for the bakumatsu kenjutsu milieu.
Cited in: Sakakibara Kenkichi
Enomoto Shōji (榎本鐘司). n.d. Budōgaku Kenkyū papers on bakumatsu shinai-match kenjutsu and the formation of modern kendō. Nanzan University. Treats the Kōbusho’s role directly.
Cited in: Sakakibara Kenkichi
Watanabe Ichirō (渡辺一郎). n.d. Bakumatsu Kantō Kenjutsu Eimeiroku no Kenkyū (幕末関東剣術英名録の研究). Built on the Man’en 1 (1860) register of Edo swordsmen — close to a census of the Kōbusho-era Edo kenjutsu world. Watanabe also edited Kendō no Rekishi (剣道の歴史, AJKF).
Cited in: Sakakibara Kenkichi
Sakakibara Kenkichi and the bakumatsu kenjutsu circle (Japanese Wikipedia). n.d. Japanese Wikipedia: 榊原鍵吉・彰義隊・上野戦争・戸塚彦介・楊心古流・戸塚派楊心流柔術・嘉納治五郎・起倒流・伊庭八郎・島田虎之助・高橋泥舟・山岡鉄舟. Starting references — pointers, not sources of record.
Cited in: Sakakibara Kenkichi
Totsuka Yōshin-ryū founders’ graves (戸塚彦介英俊の墓). n.d. Chiba City / Chiba Prefecture cultural-property pages. Totsuka biography and lineage.
Cited in: Sakakibara Kenkichi
Nomura Toshio (野村敏雄). n.d. Iba Hachirō (伊庭八郎). PHP Bunko. Iba and the Yūgekitai (popular biography).
Cited in: Sakakibara Kenkichi
Maruyama Sanzō (丸山三造). n.d. Dai Nippon Jūdō Shi (大日本柔道史). For the Iikubo / Motoyama detail — corroborate Motoyama Shōō as Kōbusho Kitō-ryū kyōju-kata (with a Kōdōkan-published Kanō history).
Cited in: Sakakibara Kenkichi
Sugimura Gitarō (杉村義太郎). n.d. Shinsengumi Nagakura Shinpachi: Ko Sugimura Yoshie no Sōnen Jidai (新撰組永倉新八：故杉村義衛の壮年時代). Otaru. Nagakura Shinpachi’s recollections, edited by his son.
Cited in: Sakakibara Kenkichi
Kashima-shinden Jikishinkage-ryū Isseikai. n.d. Rekidai dōtōsha. Isseikai website. https://www.isseikaiweb.com/歴代道統者/. Practitioner dōtō register; source of the 11th-generation entry and the parenthetical "Fujikawa Jirōshirō Chikanori" (藤川次郎四郎近徳) gloss on Akaishi. House attestation only, and the Chikanori identification is contradicted by Karukome 2013 (citing Ishigaki Anzō, 直心影流極意伝開, 2001): there Chikanori is Chikayoshi’s adopted son-in-law (taken from the Kōno house of Numata), who succeeded the Fujikawa family headship in Kansei 10 (1798) and died three months later — a distinct person from Akaishi Gunjibei Fusuke, Chikayoshi’s senior disciple and guardian to the orphaned Fujikawa heirs. The register appears to conflate the two.
Karukome Yoshitaka. n.d. Jikishinkage-ryū ni miru kata-geiko to shinai uchikomi-geiko no kenshū. Zen Nippon Kendō Renmei (AJKF) kōhō column, no. 2. https://www.kendo.or.jp/knowledge/books/column_02/. Web column by the leading academic specialist on Jikishinkage-ryū; summarizes peer-reviewed findings. Authoritative for the three-branch taxonomy (Naganuma/Fujikawa/Odani), which omits a separate Danno-ha.
Cited in: Danno Gennoshin
Nakabayashi Shinji. n.d. Jikishinkage-ryū. Sekai Daihyakka Jiten / Nippon Daihyakka Zensho, via Kotobank. https://kotobank.jp/word/直心影流-72621. Tertiary encyclopedia aggregation; the 直心影流 and 男谷精一郎 entries are by Nakabayashi Shinji. Source of the Akaishi→Danno→Odani succession and the Bunsei 6 tekiden date; note the 1817 entry-date conflict with other sources.
Nihon Kobudō Kyōkai. n.d. Kashima-shinden Jikishinkage-ryū. Nihon Kobudō Kyōkai website. https://www.nihonkobudokyoukai.org/martialarts/026/. Organizational lineage register; gives the densho succession list placing Danno (眞帆斎源義高) as 12th between Akaishi and Odani. House attestation, not external corroboration.
Cited in: Akaishi Gunjibei Fusuke, Danno Gennoshin
Kuroda-han-den Yagyū Shinkage-ryū Shūyūkan. n.d. Kage-ryū (陰流) — curriculum notes. https://syuyukan.jimdofree.com/陰流/. Yagyū Shinkage-ryū practitioner page; states that enpi was Kamiizumi’s first tachi and that the source-stream sets — Kage-ryū enpi and Shintō-ryū nanatsu-dachi (新當流七太刀) — were revered as gokui and progressively taught after sangaku and kuka. Practitioner source; corroborates the Shintō-ryū origin of the seven-sword set and its repositioning, consistent with Katō via Karukome.
Cited in: Evolution of Jikishinkage-ryū Densho
Yamada Jirōkichi (山田次朗吉). 1929. Nihon Kendō Shi (日本剣道史). The major prewar history of Japanese swordsmanship by the Jikishinkage-ryū master.
Cited in: Eight Phases and Eight Extremes
Hobsbawm, Eric, and Terence Ranger. 1983. The Invention of Tradition. Cambridge University Press. Especially Hobsbawm’s "Introduction: Inventing Traditions" — frame for the invented-tradition reading.
Kiyota, Minoru. 1987. “Shingon Mikkyō’s Twofold Mandala: Paradoxes and Integration.” Journal of the International Association of Buddhist Studies 10 (1).
Cited in: A-Un, Gogyō, Godai and Beyond
Hardacre, Helen. 1989. Shinto and the State, 1868–1988. Princeton University Press. Standard scholarly account of the formation and contested boundaries of "State Shinto."
Ōmori Nobumasa. 1991. Bujutsu densho no kenkyū: kinsei budō-shi e no apurōchi (武術伝書の研究 近世武道史へのアプローチ). Chijinkan (地人館). Cited by Karukome for the inventory of Shinkage forms existing from Kamiizumi’s time (enpi 6+2, sangaku 5, kuka 9, plus the secret-transmitted tengushō and okugi tachi).
Cited in: Evolution of Jikishinkage-ryū Densho
Major, John S. 1993. Heaven and Earth in Early Han Thought: Chapters Three, Four and Five of the Huainanzi. State University of New York Press.
Cited in: Eight Phases and Eight Extremes
Tominaga Kengo. 1996. Kendō Gohyaku-nen Shi (剣道五百年史). Shimazu Shobō (島津書房). Tsunasato and the 正兵衛家.
Cited in: Denkei (Formal Lineage)
Nakamura Tamio (中村民雄). 1996. “Bakumatsu Kantō kenjutsu ryūha denpa keitai no kenkyū (1) (幕末関東剣術流派伝播形態の研究(1)).” Fukushima Daigaku Kyōiku Gakubu Ronshū (福島大学教育学部論集), no. 61.
Cited in: Sakakibara Kenkichi
Numata-shi Shi, Shiryō-hen 2: Kinsei (沼田市史 資料編2 近世). 1997. Numata City (沼田市). p. 967 — the approx. 3,000-student figure and Numata-han context.
Cited in: Denkei (Formal Lineage)
Grotenhuis, Elizabeth ten. 1998. Japanese Mandalas: Representations of Sacred Geography. University of Hawai’i Press.
Cited in: Eight Phases and Eight Extremes
Nakamura Tamio. 1999. “Bakumatsu Kantō kenjutsu ryūha denpa keitai no kenkyū (2) (幕末関東剣術流派伝播形態の研究(2)).” Fukushima Daigaku Kyōiku Gakubu Ronshū: Shakai Kagaku Bumon (福島大学教育学部論集 社会科学部門) 66: 65–72. The genealogy underlying Karukome’s two-house account.
Cited in: Denkei (Formal Lineage), Sakakibara Kenkichi
Katō Jun’ichi. 2003. Yagyū Shinkage-ryū no kenkyū (柳生新陰流の研究). Bunri (文理). Cited by Karukome for the form-attributions drawn from Nagaoka Fusashige’s Tōhōroku seihō-hen (刀佱録・勢法篇) — Kamiizumi’s marobashi, Aisu Ikō’s tengushō, and the Kage-ryū origin of enpi/kuka.
Cited in: Evolution of Jikishinkage-ryū Densho
Iwasa Masaru. 2005. Kashima Shinden Jikishinkage-ryū (鹿島神伝直心影流). Budō Shinkōkai (武道振興会). Lineage chart, p. 18 — source of the 宗家長沼派 / 別家長沼派 labels.
Cited in: Denkei (Formal Lineage)
Xing, Guang. 2005. The Concept of the Buddha: Its Evolution from Early Buddhism to the Trikaya Theory. Routledge.
Cited in: A-Un, Gogyō, Godai and Beyond
Major, John S., Sarah A. Queen, Andrew Seth Meyer, and Harold D. Roth. 2010. The Huainanzi. Columbia University Press.
Cited in: Eight Phases and Eight Extremes
Karukome Katsutaka. 2013. “Jikishinkage-ryū ni kansuru kenkyū (直心影流に関する研究).” PhD thesis, University of Tsukuba (筑波大学). Decisive source for the two-house split (四郎左衛門家 / 正兵衛家): Tadasato as second head of the 別家, the generational dates, the Edo Mizaka locus and the sayanouchi material.
Cited in: Denkei (Formal Lineage)
Karukome Katsutaka. 2013. “Jikishinkage-ryū no bunpa ni tsuite no ichikōsatsu (直心影流の分派についての一考察).” Budōgaku Kenkyū (武道学研究) 46 (1). The Naganuma / Fujikawa / Odani branch taxonomy.
Cited in: Denkei (Formal Lineage)
Hall, David A. 2013. Encyclopedia of Japanese Martial Arts. Kodansha USA. Firmest English-language reference for the Hyakuren-kai, Seitō-ha and modern Odani-ha lines (Namiki–Itō). Hall is himself a practitioner in this line (studied under Namiki and Itō), so on the line’s own succession claims this is participant testimony, not independent corroboration.
Cited in: Denkei (Formal Lineage)
Karukome Yoshitaka. 2013. “Jikishinkage-ryū ni kansuru kenkyū (直心影流に関する研究).” PhD thesis, University of Tsukuba (筑波大学大学院人間総合科学研究科).
Cited in: Evolution of Jikishinkage-ryū Densho
Inazu Yūko (稲津裕子). 2014. “Heki-ryū kyūjutsu no kigen: Yoshida Shigekata to sono senzo ni tsuite (日置流弓術の起源：吉田重賢とその祖先について).” Supōtsu-shi Kenkyū (スポーツ史研究 / Japan Journal of Sport History), no. 27: 17. On the origins of Heki-ryū archery and the Yoshida ancestry.
Cited in: Heki-ryū and the Sekka-ha
Karukome Katsutaka. 2015. “Jikishinkage-ryū no seiritsu to sono denkei oyobi denshō ni kansuru ichikōsatsu (直心影流の成立とその伝系及び伝承に関する一考察).” Budōgaku Kenkyū (武道学研究) 47 (3): 119–38. Formation and transmission lines.
Karukome Katsutaka. 2020. Jikishinkage-ryū no kenkyū (直心影流の研究). Kokusho Kankōkai (国書刊行会). Monograph build-out of the dissertation.
Norris, J. 2021. “Tracing the Royal, Romantic and Demonic Roots of the Nio Warrior Guardian.” Global Perspectives on Japan 4: 92–121.
Cited in: A-Un, Gogyō, Godai and Beyond
Iwashita Tetsunori (岩下哲典). 2023. Yamaoka Tesshū・Takahashi Deishū (山岡鉄舟・高橋泥舟). Minerva Shobō (ミネルヴァ書房). Scholarly treatment of Deishū and the bloodless surrender.
Cited in: Sakakibara Kenkichi