If you start iaido almost anywhere in the world, the first forms you meet are the twelve Seitei kata. Here is what they are and why a separate set sits in front of the older school material.
Why a standard set exists
The All Japan Kendo Federation introduced a standardised iaido curriculum so that practitioners from different schools could train, grade and judge on common ground. It began with seven forms in 1969, grew to ten in 1981, and reached its current twelve in 2000. The forms were drawn from several major schools, including Musō Jikiden Eishin-ryū and our own Musō Shinden-ryū. Think of them as a shared language rather than a school of their own.
At our dojo every student begins here. Once the Seitei forms are steady, you move into the three deeper sets of Musō Shinden-ryū. The Seitei set never leaves you, though — it is what you are tested on at most gradings.
The twelve, in order
| # | Name | One-line idea |
|---|---|---|
| 1 | Mae | Front — the first draw, everything in miniature |
| 2 | Ushiro | Rear — turn and meet an opponent behind you |
| 3 | Ukenagashi | Receive and deflect a downward attack, then cut |
| 4 | Tsuka-ate | Strike with the hilt, then deal with two opponents |
| 5 | Kesagiri | The diagonal cut, up and down |
| 6 | Morotezuki | A thrust with both hands, front and rear |
| 7 | Sanpōgiri | Cutting in three directions |
| 8 | Ganmen-ate | Strike to the face with the hilt, then thrust |
| 9 | Soetezuki | A supported thrust against an attacker to the side |
| 10 | Shihōgiri | Cutting in four directions |
| 11 | Sōgiri | A sequence of cuts finishing the opponent |
| 12 | Nukiuchi | A sudden simultaneous draw and cut |
How to use this list
Do not try to learn from the table. You cannot, and you would only build habits a teacher has to undo later. The names are here so the forms have a hook in your memory after class, and so you know roughly where you are in the sequence. The actual learning happens on the floor, one piece at a time, with someone correcting the angle of your foot and the line of your cut.
The first kata, Mae, contains the whole art in small. Most teachers will tell you they are still finding things in it after thirty years.
A realistic timeline
Reaching all twelve forms takes most students well over a year, and "reaching" them is not the same as performing them well. Nobody finishes the Seitei set. You return to Mae forever. If that sounds discouraging, it is meant to be reassuring: there is no point at which the practice runs out.
For the deeper school material that follows, start with the Ōmori-ryū set, and read The Four Movements Inside a Kata if you want a framework for taking any new form apart.
Notes from Musokai Dojo. Useful for context, but no article replaces a teacher correcting you in person.