A Ladder Made by Binding: What the Ninpiden Shows in the Yui-bashigo

A fresh translation

Original text

Words and concepts

• 結梯 (yui-bashigo)
  Literally a ladder made by joining or binding. Iga City’s catalog gives the reading yui-bashigo; modern museum material also uses musubi-bashigo for this family of bound ladders.
• 柱木 (hashiragi)
  Wood used as the ladder’s long side pieces or uprights. The line immediately adds bamboo as an alternative, so the instruction is not tied to one material.
• 結留 (musubitomeru)
  To bind and fasten. The verb directs attention to the joint rather than treating the ladder as a single finished object.
• 堅く (kataku)
  Firmly or securely. The word describes the required condition of the fastening; it is not an ornamental claim about secret power.

The passage begins at the joint

The three lines are strikingly plain. A section in a manual of secret methods names a ladder, permits either wood or bamboo, and then concentrates on the beginning of the binding. Its first concern is not the height to be reached or the daring of the climber. It is the place where separate parts become a load-bearing object.

That focus changes how the illustration should be read. On the manuscript page, two long side pieces are joined by a repeated sequence of short crosspieces. Small loops are drawn at the ends of the rungs. The picture does not present a mysterious artifact isolated from its construction. It makes repetition visible: place, bind, and continue. The text’s nail belongs at the starting point, where the first fastening must resist movement while the rest of the ladder is assembled.

“Wooden poles or bamboo poles may be used” is equally important. The sentence identifies a function before it specifies a substance. Different materials can serve if they provide the needed uprights. This is a small example of practical writing: the manual preserves a form that can be recognized even when the available material changes.

A tool that may not begin as a tool

The Iga City catalog supplies useful context for the item. Its explanation distinguishes two kinds of yui-bashigo: a shin-bashigo, a ladder kept ready for use, and a kusa-bashigo, assembled at the site. In the latter case, the traveler could carry only bamboo poles so as not to attract suspicion, then make the ladder when it was needed. This explanation should not be confused with the three lines quoted above, but it helps clarify why the manuscript allows more than one material.

The distinction is not simply between a good ladder and an improvised substitute. It is between two relationships to transport and recognition. A completed ladder is immediately legible: anyone who sees it knows that climbing is intended. Separate poles have more ordinary possible uses. The object becomes specialized only when its parts are joined.

This is a recurring problem in the history of equipment. Every purpose-built device offers readiness, but readiness has costs: weight, bulk, maintenance, and visibility. A system made from common components delays those costs until assembly. The Ninpiden does not express that as a general theory. It records a particular object and a particular fastening. The broader pattern is an interpretation grounded in that material choice, not a slogan supplied by the manuscript.

Why the drawing matters

If the words were copied without the drawing, “bind it firmly” could seem almost empty. Beside the ladder, however, the instruction has a clear visual object. The reader can see that binding is repeated at every rung and that the first joint anchors a sequence. Text and image divide the work of explanation. The words identify permitted materials and insist on security; the image shows arrangement.

The manuscript is therefore evidence not only for an object but also for a way of transmitting technical knowledge. A drawing can preserve proportions and relations more economically than a long verbal description. The writing can then mark the step most likely to be overlooked. Neither element is a complete workshop manual by itself. Together they function as a reminder for a reader who may already possess practical knowledge of cordage, bamboo, wood, and simple joinery.

That last limitation deserves emphasis. A modern reader cannot calculate safe dimensions, loads, or knots from this excerpt. The page does not provide a test report, a standardized specification, or an account of an actual operation. It gives a compact instruction within a transmitted manual. Treating it as sufficient construction guidance would ask the passage to do something it was never designed to do.

The surviving witness is an Edo-period document

Iga City catalogs the surviving Ninpiden as an Edo-period, four-scroll document owned by the Iga-ryū Ninja Museum. The catalog records a transmission chain naming Hattori Hanzō Yasunaga, Hattori Mino-no-be Saburō, and the copyist Katō Sakuzaemon. Such a chain is part of the document’s claimed authority, but it is not the same thing as independently verified authorship for every stage.

The National Diet Library’s guide to major ninjutsu books similarly treats the work’s traditional origin with caution. It notes an association with Hattori Yasunaga and a compilation date of 1655, while warning that the historical accuracy of the tradition is uncertain. The safest description of the passage is therefore concrete: it appears in the Edo-period witness now cataloged by Iga City, in Scroll Two under the heading “On the Yui-bashigo.”

This distinction protects the evidence from two opposite errors. One would dismiss the page because its transmission is complicated. The other would turn a copied attribution into a transparent window onto a named sixteenth-century individual. The document remains historically valuable even when its genealogy must be discussed carefully. It shows what one surviving early-modern manual preserved, organized, and illustrated.

Ordinary materials in a manual of secrecy

Popular images of ninjutsu often emphasize unique weapons whose shape alone signals a hidden profession. The yui-bashigo points in another direction. Its long pieces may be wood or bamboo, and its essential action is binding. The technical interest lies in arrangement and timing rather than exotic matter.

That does not make the object trivial. Ordinary components can demand more judgment because their fitness is not guaranteed by a manufacturer or a fixed pattern. Straightness, strength, spacing, and the security of each joint would matter, even though the excerpt does not quantify them. The manuscript’s command to make the first binding firm acknowledges this dependence on workmanship.

Nor should “improvised” be used as a synonym for careless. The catalog’s kusa-bashigo is assembled when required, but the quoted line still orders the maker to secure the beginning. Adaptability and discipline appear together. The device can change with materials while the requirement for a firm fastening does not.

What these lines can and cannot show

The passage can show that the compiler included a bound ladder among the tools of Scroll Two, accepted wooden or bamboo uprights, and gave special attention to the initial fastening. The accompanying page can show how the parts were arranged in the surviving illustration. The catalog can show how the archive identifies, dates, and describes the witness.

The lines cannot prove how often such ladders were used, whether one was successful in a named infiltration, or whether every historical shinobi learned the same design. They do not establish a universal “ninja ladder,” and the drawing is not evidence that the object was unique to covert practitioners. Ladders, lashings, bamboo, and portable components belonged to a much wider material world.

The value of the excerpt is narrower and stronger. It replaces a vague image of secret equipment with a specific page: a named section, three short instructions, and a drawing. The Ninpiden asks the reader to look first at the joint. History benefits from the same habit. Before building a legend, check how the pieces are actually fastened.

Source

Ninpiden (忍秘伝), Scroll Two, “On the Yui-bashigo” (結梯之事), opening instruction; Iga City ADEAC manuscript viewer, page 16. The archive’s catalog record for the four-scroll manuscript identifies it as an Edo-period document and records its transmission statement. The separate catalog entry for the yui-bashigo gives the reading and explains the shin-bashigo/kusa-bashigo distinction. For cautious background on the work’s traditional attribution and date, see the National Diet Library guide to ninjutsu books.