Iriminage - Tsuki (Standing)

Aspect	Description
Japanese	入身投げ 突き立ち技
Translation	Entering-body throw from punch, standing technique
Classification	Nage-waza (Throwing techniques) > Iriminage series
Type	Direct entry from punch

Overview

Tsuki Iriminage is the iriminage response to a straight punch attack. It demonstrates pure irimi (entering) principle with minimal deflection - entering directly into the opponent's attack to gain superior position.

This technique emphasizes a different control method than shomenuchi or yokomenuchi iriminage: instead of grabbing the collar from behind, you grab the back of the shoulder (the root of the arm). O-Sensei specifically taught this variation as documented in his kuden.

Historical Context

O-Sensei's Specific Teaching

From Budo (1938), O-Sensei describes the technique:

"Grab her at the back of her right shoulder with your left hand."

And more specifically:

"Bring your left fist slightly below your right armpit."

These precise instructions show that tsuki iriminage has a distinct control method from other iriminage variations.

Step-by-Step Instructions

Source: Takemusu Aikido Volume 2, Pages 176-177

[1] [2] [3] Partner Punches, You Enter Behind

• When your partner punches with her right hand
• Step to the rear of your partner with your left foot (directly behind, large step)
• O-Sensei's kuden: "Grab her at the back of her right shoulder with your left hand"

Critical Point: You enter BEHIND, not to the side. This is direct irimi.

[3] Shoulder Root Control

O-Sensei's kuden (口伝):

"Grab her at the back of her right shoulder with your left hand."

This is different from other iriminage:

• Shomenuchi/Yokomenuchi: Grab collar
• Tsuki: Grab back of shoulder (arm root)

[4] Position Your Fist

O-Sensei's kuden:

"Bring your left fist slightly below your right armpit."

This specific positioning:

• Locks the shoulder control
• Connects to your center
• Prepares for the throw

[5] [6] Step Through and Throw

• Step through deeply with your right foot
• Throw your partner

The throwing mechanism is similar to other iriminage but the control point is different.

Kuden (口伝) - Oral Teachings

The Shoulder Root, Not the Collar

From Takemusu Aikido Volume 2 (Pages 176-177), O-Sensei said:

"Grab her at the back of her right shoulder with your left hand."

This is critical distinction:

• Not the collar (as in shomenuchi)
• Not the back/hip (alternative in some iriminage)
• Specifically the back of the shoulder
• This is the "arm root" (腕のつけね - ude no tsukene)

The Fist Position at Armpit

O-Sensei's specific instruction:

"Bring your left fist slightly below your right armpit."

Why this matters:

• Connects control to your center
• Your left fist is at your right armpit (crossed position)
• This creates structural lock
• Partner's shoulder is controlled by your center, not just your arm

Why Different from Other Iriminage?

The punch (tsuki) attack is different because:

• Opponent's body is more extended
• The shoulder is more accessible than collar
• Grabbing arm root gives better control of punching arm
• Prevents second punch from same arm

O-Sensei adapted the control point to suit the attack.

Riai (理合) - Sword Connection

Tsuki as Thrusting Attack

Tsuki represents:

• Straight thrust (like sword tsuki - 突き)
• Spear thrust
• Direct line attack

The irimi response mirrors defending against:

• Sword thrust
• Spear attack
• Any linear weapon

Entering Past the Weapon

The deep step behind mirrors tachidori principle:

• Move offline from weapon's path
• Enter to position where weapon cannot reach
• Control from dead angle
• Same as sword taking (tachidori)

Shoulder Control Like Tachidori

In tachidori (sword disarming), you often control:

• The shoulder/arm root
• Not just the weapon hand
• To prevent weapon from being pulled back

Tsuki iriminage uses the same principle - control the root, not just the striking hand.

Technical Details

The Entry Angle

From Photo ❶❷❸:

• Left foot steps BEHIND opponent (not to side)
• This is more direct than yokomenuchi entry
• You move completely offline from punch path
• Large, committed step

Hand Position During Entry

Left Hand:

• Goes directly to back of right shoulder
• Grabs the "arm root" (where arm connects to body)
• This is the tsukene (付け根) - the joining point

Right Hand:

• Not specified in numbered steps
• Likely protects/controls as needed
• Prepares for step-through

The Shoulder Grip Detail

What to grab:

• Back of opponent's right shoulder
• Where arm joins shoulder blade
• The muscular connection point
• Firm grip with whole hand

What not to grab:

• Not the collar/neck area
• Not the upper back
• Not the arm itself
• Specifically the shoulder root

The Fist-to-Armpit Connection

Photo ❹ position:

• Your left fist (grabbing shoulder)
• Positioned slightly below your right armpit
• This crosses your centerline
• Creates structural connection

This position:

• Locks opponent's shoulder to your center
• Uses your body structure, not arm strength
• Prevents opponent from escaping
• Sets up powerful throw

Body Positioning

After entry:

• You're behind opponent's right side
• Your left side controls their right side
• Your body acts as barrier preventing escape
• Step through with right foot completes throw

Common Mistakes

1. Grabbing Collar Instead of Shoulder

• Error: Using collar grip from shomenuchi habit
• Correction: Grab back of shoulder specifically
• O-Sensei's kuden: "Grab her at the back of her right shoulder"
• Why: Tsuki attack makes shoulder more accessible and more effective

2. Not Entering Deeply Enough

• Error: Shallow entry that doesn't get behind opponent
• Correction: Large step directly behind with left foot
• Principle: Must reach dead angle completely

3. Wrong Fist Position

• Error: Holding left hand away from body
• Correction: Bring left fist to right armpit
• Result: Without this, control is weak and throw ineffective

4. Entering to Side Instead of Behind

• Error: Stepping to opponent's side (45 degrees)
• Correction: Step directly behind (more like 90+ degrees)
• Difference: Tsuki entry is more direct than yokomenuchi

5. Using Arm Strength Instead of Structure

• Error: Pulling opponent with arm strength
• Correction: Position fist at armpit, use body structure
• Principle: Shoulder locked to your center, not arm-to-arm

6. Hesitating on Entry

• Error: Waiting to see if punch will connect
• Correction: Commit immediately to deep entry
• Reality: Against real punch, hesitation is dangerous

Relationship to Other Iriminage

Control Point Variations

Different attacks use different control points:

Attack	Control Point	O-Sensei's Instruction
Shomenuchi	Back collar	"Take the back collar"
Yokomenuchi	Back collar	"Take her collar"
Tsuki	Back of shoulder	"Grab...back of right shoulder"
Katatedori	Back collar	"Collar from behind"

Tsuki is unique in using shoulder root control.

Why Shoulder for Tsuki?

The punch creates different situation:

• Opponent more extended
• Arm is thrust forward
• Shoulder blade becomes accessible
• Collar may be harder to reach quickly
• Shoulder control stops the punching arm

O-Sensei adapted the technique to the attack.

Entering Principle Remains Same

Despite different control point, the irimi principle is identical:

• Enter deeply
• Take dead angle position
• Control from behind
• Step through and throw

The destination is the same; the route adapts to the attack.

Comparison to Other Tsuki Responses

Tsuki Iriminage vs. Tsuki Ikkyo

Ikkyo (pin):

• Controls the extended arm
• Pins it down
• Emphasizes arm control

Iriminage (throw):

• Controls the shoulder root
• Throws immediately
• Emphasizes body control

Both start with entering offline from punch.

Tsuki Iriminage vs. Tsuki Kotegaeshi

Kotegaeshi (wrist turn):

• Grabs the punching wrist
• Turns it outward
• Throw via wrist control

Iriminage:

• Grabs shoulder, not wrist
• No wrist turn
• Direct throw from shoulder control

Different techniques, same entering principle.

Training Progression

Kotai (固体 - Solid Practice)

• Partner completes full punch
• Practice finding the shoulder root
• Feel the fist-to-armpit position
• Build confidence entering toward punch

Jutai (柔体 - Soft Practice)

• Partner punches with power
• Enter earlier in the punch
• Smooth transition from entry to throw
• Maintain structure throughout

Ryutai (流体 - Flowing Practice)

• Enter as punch begins
• Shoulder control happens during entry
• Entry and throw are one motion
• Adapt to different punch angles

Kitai (気体 - Ki/Spirit Level)

• Opponent cannot complete punch
• Your movement stops their intention
• Advanced level requiring years of practice

Related Techniques

Other Tsuki Responses

• Ikkyo - Tsuki - Arm control and pin
• Kotegaeshi - Tsuki - Wrist turn throw
• Shihonage - Tsuki - Four-direction throw

Other Iriminage Variations

• Iriminage - Shomenuchi - Collar control
• Iriminage - Yokomenuchi - Collar control
• Iriminage - Katatedori - Collar control

All share irimi principle but adapt control to attack.

Weapon Defense Connection

• tachidori-iriminage - Sword disarming version
• Same entering principle against thrusting weapon

Sources

Primary Sources

• Takemusu Aikido Volume 2 (Pages 176-177): Complete step-by-step with numbered photos
• Budo (1938): O-Sensei's description of shoulder control and fist position

Technical Principles

• Takemusu Aikido Volume 2 (Introduction): Four training levels
• Takemusu Aikido Volume 4 (Page 150): O-Sensei's emphasis on iriminage in later years

Notes

Adaptation to Attack Type

This technique beautifully demonstrates aikido's adaptive nature:

• Same throw (iriminage)
• Same principle (irimi)
• Different control point (shoulder vs. collar)
• Adapted to suit the attack (punch vs. strike)

This is true throughout aikido - the principle remains constant while the application adapts.

The Specificity of O-Sensei's Kuden

O-Sensei's specific instructions:

1. "Grab her at the back of her right shoulder"
2. "Bring your left fist slightly below your right armpit"

These are not vague - they're precise technical details preserved by Saito Sensei. This level of specificity is what makes Saito's documentation so valuable.

Shoulder Root Control in Other Techniques

The principle of controlling the "arm root" (tsukene) appears in:

• Some kokyu techniques
• Certain weapon disarming methods
• Other throw variations

It's a fundamental concept: control the root, not just the branch (arm).

Why Preserve the Distinction?

Some schools use collar grab for all iriminage, including tsuki. Saito Sensei preserves O-Sensei's original teaching because:

• It's more effective for punching attacks
• It shows adaptability principle
• It demonstrates different control methods
• It's what O-Sensei specifically taught

Maintaining these distinctions preserves the depth of the art.

Training Against Realistic Punches

Tsuki iriminage requires training with:

• Committed punches
• Proper extension
• Realistic speed

Without proper attack, the technique's effectiveness cannot be understood. The uke's role in creating realistic tsuki is essential for both partners' development.

The Crossed Structure

The left fist at right armpit creates a crossed structure:

• Your left controls their right
• Connected through your center
• Similar to some sword positions
• Structural efficiency, not muscular force

This crossed connection appears in various aikido techniques and comes from weapons work.