人法地，地法天，天法道，道法自然
rén fǎ dì, dì fǎ tiān, tiān fǎ dào, dào fǎ zìrán
Humanity follows the earth, earth follows heaven, heaven follows the Dao, and the Dao follows what is natural. — Dào Dé Jīng, ch. 25
Most of what is worth knowing in Jiki Shinkage-ryū is not on the surface of its kata. The work of drawing a form apart, examining it, and finding the connections that run between different parts of the curriculum is called kuzushi (崩し); the word can also name a sudden, spontaneous change, and the two senses turn out to be related. What follows are three studies in kuzushi, arranged as an ascent through the curriculum — the hidden order of initiative or sente in to-no-kata, the turning point at its capstone, and the close-quarter application reached in kodachi. I have set them under the old triad of heaven, earth, and man (天地人). The triad names its realms descending, but the line from the Dào Dé Jīng above runs the other way: the practitioner grounds in earth, earth in heaven, heaven in the Dao, and the Dao in what is natural. The essay is read from principle down to application; the practice is built from the ground up toward the spontaneous.
Heaven — 天
気剣体の一致を会得したとき、剣術の極意は全うするのである
When one has mastered the harmony of spirit, sword, and body, the inner essence of swordsmanship is fulfilled.
Raito — the variant of jōdan no kamae used in Jiki Shinkage-ryū, the arms stretched overhead with the tip angled back — looks like a posture built to attack from, and in fact it is. Yet in to-no-kata we almost never see shidachi attack directly from raito, except in the menkage kata pair. The structure of the set explains why, and with it a good deal about initiative.
The first kata, ryubi (the dragon’s tail), steps forward and back with continuous yokomen strikes to the side of the head, or to the forearm against an upper-level stance. The two menkage kata drill the same movement as a direct downward cut to the men. The first part of teppa waits in raito and cuts kesa to either side against an upper- or mid-level attack. Then, across the second half of teppa, matsukaze, and hayafune, shidachi advances three steps in raito and cuts down slowly, showing he knows the correct distance, and provokes uchidachi into moving — though often uchidachi does not take the bait. That is unusual for a ryūha, where ordinarily it is uchidachi who leads. Here shidachi is learning to attack, and most of the lesson is hidden beneath the surface.
What Jiki Shinkage-ryū wants is to know the optimal distance, the ma-ai, from which to enter in a way that shuts down the opponent’s options. The name teppa — breaking iron — points to it: the kasumi cut breaks the seigan the opponent holds, as iron is broken. The reflex to cultivate is that when uchidachi does blink or flinch and move, the cut from raito — men, yokomen, or kesa, as in ryubi and menkage — fills the gap without thought.
There is a posture riddle worth sitting with. When the range is a little too close — the opponent has erred, or is about to attack and has not yet moved — one can interrupt from hassō or from sha, the low stance with the sword extended behind between waist and knee. Pre-empting an attack already decided upon but not yet manifested is sometimes called sen sen no sen. Hassō is less tiring, the hands less exposed, and the attack very fast; it is inwardly aggressive (ken) but outwardly waiting and hidden (tai). In hōjō (法定) we see shidachi attack from hassō and from sha; in to-no-kata the initial cuts come from raito, and later, in matsukaze, from sha. But shidachi never adopts hassō anywhere in to-no-kata. I take that to be a riddle.
To attack from raito with sudden power, the skill is to relax in the posture while stretching the arms, the shoulder blades drawn down, and to cut with gravity rather than against it, so that the release is like loosing an arrow into flight — no joint locked, what in the Chinese arts is called sōng (鬆), relaxed in a particular technical sense. The point of the relaxation is that when the opponent makes his mistake there is no delay. Here kage — shadowing — is an active matter, not a passive miming of another’s movement; it operates at the level of mind and spirit.
Generally we want to provoke the opponent into a mistake. Some lines of Shinkage-ryū do this by leaving an opening, luring an attack from an expected angle. It can work, but it can also slide into a passive habit — the belief that precision alone will win, which tends to curdle in those who never stress-test their practice in sparring. Jiki Shinkage-ryū, as I understand it, does less of this and instead tries to dominate, narrowing the opponent’s options, fixing him in place or driving him back and cutting him down before he reacts. There is a famous account of such a match with Sakakibara. For ordinary practitioners it is likelier that we provoke a flinch — entering before we have attacked, drawing an overreaction — so that the opponent’s attack comes sudden but weak and short, and we can cut through it and fix him, often down the centerline into the head, torso, or forearms.
This is why, in much of to-no-kata, one party does not react. We are training ourselves not to be perturbed by what the other is doing: fudōshin. The reactions in the second six kata are then about how to follow up and still attack when the first entry fails to shake the opponent from his stance.
Earth — 地
The capstone of to-no-kata descends from earth. The set’s fourteen short partner forms close on a flowing uchikomi called enren (圓連) — the linking of chain-links, or the beads of a mālā, into a circle — which is said to have once been the fifth kata of the introductory set hōjō, itself built on Daoist five-phase theory. In the present arrangement of hōjō the fifth phase, earth, marks the end of each season as it turns into the next, expressed by a ritual movement, gehan-in, that flows into the walking methods, unpō, performed with the breathing of the coming season. There were originally five kata, much like sangakuen in Yagyū Shinkage-ryū, with a harvest season as the fifth, between summer and autumn. Earth is the phase of transition — the turning point — and enren keeps that character.
The uchikomi itself is a randori-like practice of repeated cutting against a target, a moving suburi that introduces the lateral movement otherwise missing from the curriculum. It is done cryptically: one cuts along a line of attack with no combative meaning, so that on the surface it looks like pressure-testing that leads nowhere. The subtlety is that uchi and shi appear to do the same thing but do not — they perform complementary motions, one yin and one yang, that balance each other. So the capstone teaches that kage, shadowing, can be far more than matching one’s posture against a static kamae; it is the relation of yin to yang, solid to transparent.
What the uchikomi often produces in continuous practice is a difficult ending. Uchidachi has to extend his kiai to signal that the repeated cutting is about to stop — which strains the uchidachi and shidachi roles that Jiki Shinkage-ryū otherwise keeps so cleanly, since uchidachi should be pressing shidachi, not assisting him. Without that coordination the sequence cannot be closed smoothly.
An example from practice. Filling in for a senior student who was ill, I joined the enbu of kata at Kagami Biraki, performing the to-no-kata and kodachi sections and trying to bring a strong seme to the offering. The ending of the enren sequence came out of rhythm, and shidachi realized he would be struck. He dodged — and from where I stood it was as if he had vanished an instant before my cut landed. This is a skill the art is meant to cultivate: done properly, the practitioner disappears from view. The patron deity of Shinkage-ryū, Marishiten (Mārīcī), goddess of light, is held to grant the siddhi, or genjutsu, of invisibility, and a sudden disappearance in coordinated tai-sabaki and sword movement is an instance of it.
Striking with full force into empty space — and, because we had been moving fast and light, holding the shinai too loosely — I found no target, kept my posture, and the shinai flew from my hands like an arrow into the ground. I had lost the weapon but not my balance or my zanshin. I reverted to unpō, advancing slowly and strongly to drive shidachi back unarmed; had he attacked, I could have accepted the cut to end the kata or tried to answer, but he mirrored me instead, and in truth anything might have happened. I stepped back, knelt to recover the weapon, and continued to move away while keeping forward pressure throughout. Between us we had spontaneously produced something close to a passage from marobashi, the final section of the art, which my partner had never seen — normally shidachi advancing with kodachi against tachi, but the spirit was the same. The tactical failure had become an occasion to hold zanshin through the shock of something going suddenly and unexpectedly wrong. Developing shidachi to the point where he can win is, after all, the purpose of to-no-kata.
Man — 人
The different kata of Jiki Shinkage-ryū relate to one another recursively. The triangle step of sangakuen is encoded within ryubi and menkage, but only kuzushi and variation reveal it, and finding it prepares the practitioner for the harder kuzushi of kodachi — which in turn feeds back into to-no-kata, since the movement of kissaki gaeshi lets one move around the opponent’s blade in matsukaze, an instance of marobashi, free and unimpeded movement. The curriculum folds back on itself at the point of contact.
Kodachi is the first upper-level set, and it begins to demand refined body mechanics that would be very hard to enter without unpō, hōjō, and to-no-kata first; it assumes a Jiki Shinkage-ryū practitioner rather than making one. The hips stay square — in the line I was taught, pure Jiki keeps the hips straight where other Shinkage-ryū pull across the lower back to generate power — and on the entry it is essential not to tilt or lean, or the entry weakens and exposes one to the power of the tachi. Earlier sets prepare the ground: tai atari in hassō happa, at first a ritual-seeming movement, sets the mind needed later in kodachi, where one must enter fully committed, indifferent to success or failure, throwing one’s life away to get close enough to the tachi to live.
Many of the movements have a forward, ritual presentation and a deeper one that emerges when reversed. A continuous, upward-angled tai atari can keep advancing after a downward cut has driven the opponent back; a sideways deflection can be added, into the half-sword position called torii-dome, useful in an emergency, though uchidachi can press up against it, and shidachi can then flow over the top. The upper-level tai atari of chotan ichimi, the last kata of hōjō, can be an upward deflection that twists at once to stab the face or cut the neck, rather than the long-range ritual thrust first shown. There are many such riddles.
It is worth naming the three levels at which each kata set is practiced. The first draws out the spirit, with long, powerful kiai and a focus on breathing — in the dōjō where I trained we extended the ya-ei kiai for breath training in hōjō, where others use shorter, sharper kiai. The second refines that power into a sharper, more precise instrument. The third quiets the practice and develops the ability to respond and move unencumbered, driven by intuition and wisdom. The progression matters because kodachi, like hōjō, conceals its true intentions, where to-no-kata is comparatively open: hōjō lays the foundations, to-no-kata develops tactics and the centerline, kodachi teaches infighting and stability around the central axis, and the later habiki set — practiced with rebated-edge swords — puts it together, refining the lower-body connection and the bow of the back.
At the Gassankan I practice the close-quarter armed grappling the art calls kogusoku, a term several traditions share. In the way I organize my teaching, kodachi is the last set of the first group of teachings and kogusoku the first of the private material, so I will keep to a high level here. The six kodachi kata are Fūsei, Suisei, Kissaki Gaeshi, Tsuba Jiri, Toppi Oppi, and Enkai. Fūsei and Suisei are paired, both ending in a bind (tsuba-zerai) with the right palm down, one entering from above and one from below; Kissaki Gaeshi and Tsuba Jiri are paired likewise with the right palm up.
The applications branch from how uchidachi is affected by the entry. On Fūsei and Suisei, if he meets strongly one yields as in the formal kata to off-balance him, then — instead of the slow ritual cut with the mu kiai — controls the inside of his right arm and cuts the neck at once; if he stays bound at the tsuba, one slips right, drawing him left, and cuts horizontally, the shorter kodachi getting past his blade; if he bounces off, one steps in and cuts the ganmen vertically, driving him back. On Kissaki Gaeshi and Tsuba Jiri, alternate footwork lets one bypass the sword to cut the neck directly, or control the upper arm and scapula to double the opponent over, a one-handed arm-bar held just long enough to cut or stab; the Tsuba Jiri binds open onto sweeps and throws in several directions, each followed by a stab as he lands, useful if he begins to grapple or draws a second weapon. Toppi Oppi builds the leg strength for habiki — classically springing up from a half-seiza, though I favor a low crouch adopted from Hebei Xíngyì, one of the small ways my preservation of the kata differs from orthodox lines. Enkai is the key that unlocks the previous five, and the kuzushi it opens, like habiki and marobashi, remain private to the tradition; I only allude to them.
Tsuba-zerai is not only for kodachi against tachi. One can meet at the tsuba with tachi as well — beginning ryubi, for instance, with uchidachi making a T-step to meet the bind rather than cutting — and drill jun and gyaku entries in free practice with fukuro shinai, shidachi off-balancing and cutting the tare, uchidachi answering with half-sword at close range. The variations all carry the exponent into close contact, a bridge to grappling. As the maxim has it: one mind, any weapon.
The Dao, and the Natural — 道・自然
If gokui are essential principles and kuzushi the work of uncovering them, the end of that work is not a further technique but a way of moving. The third level of practice — quiet, unencumbered, intuitive — is the same thing the enren incident showed by accident: when the form broke, what answered was not deliberation but marobashi, free and unimpeded movement, arising on its own. This is where the chain of the Dào Dé Jīng comes to rest. Man follows earth, earth heaven, heaven the Dao; and the Dao follows zìrán (自然), what is so of itself. The whole curriculum, read upward, points at the spontaneous.
The principle has its locus classicus in the Kage mokuroku (影目録), the transmission set down in Kamiizumi’s own hand and passed to Yagyū Munetoshi:
懸待表裏は一隅を守らず、敵に随って転変し、一重の手段を施す
Engaging and waiting, the seen and the hidden, defend no single corner; shifting and turning in accordance with the opponent, one brings a single, undivided response to bear.
Kage mokuroku 影目録, transmission from Kamiizumi Hidetsuna (上泉秀綱, c. 1508–1577), founder of Shinkage-ryū, to Yagyū Munetoshi (柳生宗厳, 1529–1606).
The Shinkage-ryū Heihō Kenshinkai 新陰流兵法研心会 gloss marobashi (転) as:
「懸待表裡（けんたいひょうり）のはたらきを本源として、敵のはたらきに随って円転・自由・自在なはたらきを為すこと」
Taking the working of ken-tai-hyōri — engaging and waiting, the seen and the hidden — as its wellspring, to perform circular, free, and unhindered action in accordance with the opponent’s own movement.
Shinkage-ryū ni tsuite 新陰流について - accessed June 2026.
The phrase ken-tai-hyōri (懸待表裡) consists of ken (懸, engaging/seizing the initiative), tai (待, waiting/receiving), and hyōri (表裏, surface and reverse — the outward shown and the hidden intent). Enten jiyū jizai (円転・自由・自在な) refers to enten (円転; circular and revolving), jiyū (自由; free or unconstrained), and jizai (自在な; unrestricted or done at will).
Marobashi is ken-tai-hyōri set in motion: the duality of engaging and waiting, surface and depth, taken as the root and then expressed as free, circling, unhindered movement that follows the opponent.
The duality of ken and tai runs from the first study to the last: the hidden initiative of to-no-kata, the yin and yang of enren, the committed entry of kodachi.
A fuller passage of the same teaching, cited in Ōmori (1991, p. 15) and translated by Trenson (2022), draws the principle out in images of nature: one rests the mind on neither engaging nor waiting but adjusts from moment to moment with the opponent — as a sail is trimmed the instant the wind shifts, or a hawk loosed the moment the hare breaks cover. Here attack is not attack and defense not defense; when one attacks, the mind is in defense, and when one defends, the mind is in attack. It is like a cat asleep beneath the peony in bloom.
What these texts describe is the point at which the duality dissolves into a single, natural responsiveness — the cat that is wholly at rest and wholly ready. These are some of the things that make Jiki Shinkage-ryū a lifelong practice; I hope this writing conveys at least that much.
References
- Lǎozǐ. Dào Dé Jīng, ch. 25. The line used as the epigraph — humanity follows earth, earth heaven, heaven the Dao, and the Dao what is natural (zìrán). Translations consulted: D. C. Lau, Tao Te Ching (Harmondsworth: Penguin, 1963); Roger T. Ames and David L. Hall, Dao De Jing: A Philosophical Translation (New York: Ballantine, 2003).
- Yijing 易經 (Book of Changes). The triad of heaven, earth, and man derives from the “three powers” (三才, sāncái) set out in the Xici and Shuogua commentaries. See Richard Wilhelm and Cary F. Baynes, trans., The I Ching, or Book of Changes (Princeton: Princeton University Press, 1967); Richard John Lynn, trans., The Classic of Changes (New York: Columbia University Press, 1994).
- Kage mokuroku 影目録. Transmission attributed to Kamiizumi Hidetsuna (上泉秀綱) and passed to Yagyū Munetoshi (柳生宗厳). [Source of the ken-tai-hyōri passage quoted above; wording to be confirmed against a published edition.]
- Hall, David A. 2014. The Buddhist Goddess Marishiten: A Study of the Evolution and Impact of Her Cult on the Japanese Warrior. Leiden: Brill (Global Oriental). [On Marishiten / Marici and the siddhi of invisibility.]
- Ōmori Nobumasa 大森宣昌. 1991. Bujutsu densho no kenkyū 武術伝書の研究 [A Study of Martial Art Initiation Documents]. [Source of the Kamiizumi–Yagyū Munetoshi densho on ken and tai, p. 15; publisher to be confirmed from Trenson 2022.]
- Raugas, Mark. 2025. The Truth of the Calm Spirit: The Practice of Shinkage-ryū Heihō as Taoist Internal Alchemy.
- Trenson, Steven. 2022. “Buddhism and Martial Arts in Premodern Japan: New Observations from a Religious Historical Perspective.” Religions 13 (5): 440. https://doi.org/10.3390/rel13050440.
