Iaigoshi

In Tenshin-ryu, there are many techniques that involve transitioning from the Ōgiza (扇坐) into the Iaigoshi (居相腰). This movement is therefore considered a fundamental and essential action. However, for modern practitioners who are unfamiliar with floor-seated culture, this movement can be quite challenging. For that reason, we would like to introduce a training method that isolates and focuses solely on the motion of transitioning from Ōgiza into Iaigoshi. Please note that this is not a traditional method of practice.

One of the first times a beginner applies Iaigoshi is during the Tsukauchi (柄打) technique.
You begin by taking the sword, closing both knees, and rising into a kiza (跪坐 toe-standing) position.
Then, the right foot steps out largely to the front, and the strike (柄打 Tsukauchi) is performed.
After advancing the front foot, the rear knee is drawn forward, closely approaching the heel of the front foot.

This movement of bringing the rear knee closer to the front foot is called Yose-ashi (寄せ足 drawing the foot in) or Susumi-ashi (進み足
advancing foot).

As a point of caution, in basic practice (楷書 Kaisho), the heel should be raised as much as possible into a toe-standing position. Aim to form a straight line from the shin to the instep, while lifting the knee high.

Also, the angle of the rear shin changes depending on the angle of the upper body and hips during Iaigoshi.

The more angled the Hanmi (半身 take an oblique stance) stance becomes, the more the rear shin turns outward to the side.

When facing the opponent directly in Iaigoshi, the rear shin remains aligned straight.

Movement Explanation

From the Ōgiza position, start by closing both knees.
Then raise the hips and transition into a toe-standing position.
Step forward largely with the right foot (or left, as appropriate).
Next, bring the rear knee forward until it comes close to the
front foot.
Maintain the Iaigoshi posture briefly in that state.

Repetitive Practice

It is recommended to switch the feet and perform the movement on the opposite side as well.
(training in one continuous motion without pausing)

Ippaku Practice

Once the movement becomes more familiar, practice in a single count (Sōsho 草書, Ri 離).
In one motion, close the knees and raise the hips.
Step out with the right foot while simultaneously performing yose-ashi.

In Closing

This kind of isolated training may seem dull or monotonous, but it is absolutely essential for strengthening and enhancing the body’s functional abilities.
At first glance, it may feel like a detour, but in reality, it is the most efficient path toward improvement.

Certainly, performing the entire sequence of a technique is necessary for mastering its flow.
However, for those still inexperienced, attempting to correct multiple points at once is not effective, especially since humans are generally poor at multitasking.

There is no strict rule for how many repetitions to perform, but doing 20 repetitions per set for two sets is recommended.
Practicing both in Kaisho 楷書 and Sōsho 草書 forms will yield better results.

Tenshinryu contains many techniques and training methods, so rather than repeating the same basic drills daily, it is more balanced to revisit each drill periodically—perhaps once per week—allowing you to steadily develop both physical capability and technical skill.

We look forward to seeing you again in the next Theme.