June 9, 2001: Updated. Converted the movie format to Microsoft MPEG-4 v2. Now you can download the movies much faster.
Almost all Iai schools were derived from a common mythological founder,
named Jushin (or Shigenobu, HAYASHIZAKI Jinsuke, etc).
Muso Shinden is also one of the successors of Jushin style.
HAYASHIZAKI Shigenobu appeared circa 1560 - 1570, devised some forms of sword-drawing arts (i.e., Batto Jutu, an alternative Japanese name of Iai) for the first time.
We would regard Iai as a dance, a sport, or a spiritual training, but until recently it has been a real technique for assasination, or defence from opponents, characterized by the sudden and quick manipulation of the sword. We know that today's Iai styles have been modified a lot since it was first established. Also the commercial movies, TV shows, comics, dramas, and street performance could be the source of our confusion and misunderstanding. You (Foreigners as well as Japanese) hear some times before that the Japanese martial arts are based on manners and etiquettes, starting with respect and ending also with respect. But at least in the days of the Civil Wars, rudeness was a more preferable virtue than such politeness.
The civil war state of Japan was ceased by the final winner, Shogun Ieyasu, by the middle of the 17th century. Some new styles of Iai arts were introduced and merged in. In almost cases the assassin is supposed to be a mission sent to the enemies' house. The guest would make his best effort to persuade, disarm, or arrest the host. It was of course a dangerous task. When the host would refuse or resist, the guest should use force to complete the mission, as well as to defend himself. These situations seem very common even in the peace period of Edo, so the arts of Iai would have been still developed, or at least maintained. Some also liked to preserve and inherit the techniques in a style of art.
The guest and host would be sitting and talking to each other face to face (the original meaning of "Iai" comes from this situation; "I" in "Iai" means sitting, and "ai" means facing). The sudden attack is sometimes effective when the opponents are relaxing or not facing directly, e. g. when bowing or saying good bye...
The living style was also over-formalized in those Edo Period. The manner of daily life (known as "Ogasawara" style rooted from the former period of Muromachi) describing how to eat, drink, walk, enter and leave the room, open and close the door, sit down and stand up, became very common among Samurais. Almost all people started using the "Tatami" flooring in their houses and sitting on it in "Seiza" (formal sitting) pose.
This change affected the Iai styles. Older sitting pose is more relaxing and physically easy, but newer Iai styles adopted the "Seiza" pose. It means we could distinguish original forms from newly invented ones observing the sitting poses. The name "Iai" might occur after Seiza sitting on the soft Tatami floor became popular in Edo Period.
Eishin (or HASEGAWA Hidenobu) was supposed to be a quite important reformer
of Shigenobu style in middle 18th century.
Later, Oomori style was introduced into Eishin style,
which became a mixture of verious styles,
including sitting, standing, and Seiza forms.
This was the direct ancestor of "Muso Shinden" and "Muso Jikiden"
(or "Muso Jikiden Eishin") styles.
"Muso Shinden" and "Muso Jikiden" are quite similar.
Both has the same sound "Muso"
(the name was said to be given by Tycoon Hideyoshi, when his tournament was held).
Muso Shinden consists of three parts described below:
the first, second levels, and the secret level.
It could be said that these forms were a mere formalization, or an invention for beginners training.
It is called "Oku Iai" in Japanese.
It seems a collection of real assasinating techniques once used before
in a real battle.
The naming style is also straight-forward.
The name "Oku" implies that these forms were confidentially inherited
and have never been exposed to people outside of the school?
I don't think so.
I think these forms are simply old and original,
too much cruel or dangerous to be shown to common people.
Divided into two parts: sitting and standing. Itomagoi starts in Seiza pose, though. Standing Forms seem rather old.
These forms are very exciting and realistic.
I love them very much.
These Iai arts were played by my grandfather, NAGAE Matasaburo,
in his sixties (I guess).
He was born in Nagasaki and lived there, received the 7th grade of Kendo and 8th grade of Iai
from Zen-Nippon Kendo Renmei (All-Japan Kendo Federation).
He also practiced Shinto Munen style Iai.
The original movies were recorded in 8mm films,
then edited in a VHS tape
(the image quality is awful).
I don't know who took and maintained these films
(maybe one of my grandfather's disciplines did).
I converted it in DV (digital video) format,
stored in HDD,
finally created Microsoft MPEG-4 v2 format (320x240, 10fps).
You may freely redistribute these movies for the sake of the prosperity of Iai arts.
list of avi, quicktime, and divx avi files. Japanese page.