Iaido SeizanoBu 11 Nukiuchi Iwata Norikazu Sensei (Translation in description) 居合道 正座の部 十一本目抜打 岩田憲一 

Seiza No Bu Ju Ipponme (11) Nukiuchi (Sudden Draw) 正座の部 十一本目 抜打
Iwata Norikazu 岩田憲一
Muso Jikiden Eishin Ryu Iaido 無双直伝英信流 居合道
In the 11th form, Nukiuchi, you sense the intent to kill from the opponent and respond by performing a quick nukitsuke (drawing and cutting in one motion).
It is important to open up and move forward with the downward cut.
To get as close as possible to the opponent, you slide forward as if your knees are pressing into the floor. You must not forget to open your knees at the same time as the downward cut.