The style


Kyu grade

Colored belt

Minimum time between grading

7. kyu

White belt   

5 months

6. kyu           

Yellow belt

5 months

5. kyu

Orange belt

5 months

5. kyu with tap 

Orange belt with black tap

5 months

4. kyu   

Green belt

5 months

4. kyu with tap

Green belt with black tap

5 months

3. kyu

Blue belt

5 months

3. kyu with tap

Blue belt with black tap

5 months

2. kyu

Purple belt

5 months

2. kyu with tap

Purple belt with black tap

5 months

1. kyu

Brown belt                         

5 months

1. kyu with tap

Brown belt with black tap

5 months


Dan grades

Colored belts

Min. time before next grading

Mininmum age for this grading

1. dan - Shodan

Black belt

1  year

18 years

2. dan - Nidan

Black belt

2  years

21 years

3. dan - Sandan

Black belt

3  years

25 years

4. dan - Yondan

Black or Black and Red belt 

4  years

30 years

5. dan - Godan

Black or Black and Red belt 

5  years

35 years

6. dan - Rokudan

Black or Red and white belt

6  years

40 years

7. dan - Shichidan

Black or Red and white belt

7  years

45 years

8. dan - Hachidan

Black or Red and white belt

8  years

50 years

9. dan - Kyudan

Black or Red belt

9  years

55 years

10. dan - Judan

Black or Red belt

10 years

60 years

The Style - a modern Ju-jitsu style adapted for the present


The Mizu-no-kokoro Ryu Ju-jitsu style is today trained by somewhere around 300 ju-jitsuka's, in Denmark.


The technical side of the system is a mix of different martial arts, the core of the system is inspired by the Tsutsumi Hozan ryu Jujitsu, Aiki-Jutsu, Kenpo, Aikido and have also some influence from filipino styles. The system is continusly polished and refined to meet the demands that are expected from a moderne Jujitsu system.

Gradings in this system do not come easy, it is hard work physically and mentally.


The system was founded in the year 2000, by Christian Hvidberg, and is inspired by the different styles he have meet in his extensive trained during his many years in martial art training.

He started his martial art training started in 1976, with Judo and Ju-jitsu´in Hjørring Jiu-Jitsu Klub, and later trained other styles, read more under founder.   


Here is some of the background and thoughts that has been the foundation of the system.



Mizu-no-kokoro is a concept from zen buddhisme that have been used in the martial art for many years, it can roughly be translated to "Mind like water." A psychological principle of the martial arts emphasizing the need to have a calm mind while facing an opponent, having a mind much like the surface of undisturbed water.

The thought is, if you take a stone and throw it into the water, then the surface will not react before or after the stone hits the surface of the water, but will react exactly at the same time as the stone transfer the energi to the surface.

The water absorb the stone and finds it's calm undesturbed surface again.

MIZU = Water

KOKORO = Heart

The idea of using this concept in a ju-jitsu style, is my wish and a goal of bringing the student to a level of calmenes when faced by a threat, to given an edge to handle the situation without letting the fear in before the whole thing is over.

This takes a lot of time and a lot of training, and can only be achieved by repeating the techniques for several hundred times and through repeatedly reflex trainings, so the student feels ready when faced with danger.


It was also the idea to think of the Ju-jitsu style to have the same qualitys as water, being soft,  floating and absorbing the force, but at the same time to being hard and destrutable like the element of water also can be - being able to strike back on the attacker with appropriate force.   

JU = Soft or gentle

Jutsu = Art

Ju-Jitsu, Ju-Jutsu, Jiu Jitsu

Confusing isn't, a lot of different words for the same thing.

It is all about a "bad" translation years and years ago.

Please read the whole story on Wikipedia

The logo:

The logo of the system is a combination of two parts - the black triangel and the red and white circular symbol - the Mitsu-tomoe


The kanji for Mizu-no-kokoro in the left corner, the kanji for Ju-jitsu in the right corner and the kanji for Kan in the top corner


Kan means the place, representing the palce where we train Mizu-no-kokoro ju-jitsu.


The emblem is worn on the left arm, in the middel of shoulder and elbow, faceing to the left side.

The triangel:

The black triangel. In the asian interpretation of the five elements the color of water is black, the element of water is used in the name of the system - Mizu. - This element is also an inspiration for the techniques in the system.

The triangel also symbolise the taisabaki of the system, we always move out of the line of attack and then attack on a new line, illustrated by the red arrow int the center as the attack line, and the two red arrow angled on the attack line, creating a new line attack line for the defence

This basic shape is very simular to the shape of the logo from Chi-ryu, from Jhonny Bernachewice. from whom there also is some inspiration and influence in this system.

The Mitsu-tomoe

The name Mitsu-tomoe meaning turning or circular, refering to the motion of the earth.


The Mitsu-tomoe is also related to the yin yang symbol, and have  similar meaning representing the play of the forces in the cosmos.


To incorporate this sybol in the system, was also the idea of motion -or movement, never standing still. 

The Dogi

In the Mizu-no-kokoro Ryu Ju-jitsu system the budoka must always wear a clean gi without any tears or holes in it.

The budoka must inspect the dogi before each training.


The Mizu-no-kokoro Ryu Ju-jitsu emblem must be worn on the left upper arm, between the elbow and the shoulder


The colors of the gi: the kyu grades wear a white and the dangrades can also wear a black or blue gi. We always wear the same color jacket and trousers, weather it is white, black og blue.

The grading system:   

The time between the gradings are minimum times, and will not be possible for all students to reach. Not all students have the skill, will or is ready to make the scarifice it takes to pass the higher grades.


In the different clubs there can be extra gradings between each grade for the children, as they need more time to absorb the program.


All the tap gradings between the belt grades are kihon grades, this mean that you have to show all the kihon up til this grade. The belt gradings are technique grading where you combine all the kihon into techniques.

The gradings and belt collers:

7. kyu white belt

6. kyu yellow belt

5. kyu orange belt

4. kyu green belt

3. kyu blu belt

2. kyu purpl belt

1. kyu brow belt

1. dan black belt

2. dan black belt

3. dan black belt

4. dan black belt

5. dan black and red belt

6. dan red and white belt

7. dan red and white belt

8. dan red and white belt

9. dan red belt

10. dan red belt


  Mizu-no-kokoro Ryu Ju-Jitsu