This is from the Kata Gyokko Ryu Ninjutsu Kosshijutsu Chu ryaku no maki
This is from the Ryu Ha Gyokko Ryu Ninjutsu
Korai (Tiger Fall)
The name of this technique means to throw down a tiger. The important point here is when slipping in underneath the Ukes arm is to stick with your back against the Uke.
Both clasp both hands in Futen Goshin Gassho and bow to each other. Then both you and the Uke stand in Ichimonji no Kamae.
The Uke draws a short sword and stands in Jodan no Kamae with the short sword over the head (one hand holds the short sword).
The Uke cuts down from above. Take one step back with the left and catch the wrist with the right hand. (Turn the hand in for this). The Uke tries to pull away from this. Stay with the Uke and move in the same manner as in Ujaku.
Bring the short sword between you and the Uke and continue as in Ujaku. Throw the Uke with Katate Nage.
Place the hand that holds the short sword at the right hip to control the Ukes short sword to stop him cutting you. (Control the Ukes thumb).
Finish with a stamp to the Ukes head with the left foot. Then return to Ichimonji no Kamae and Zanshin.
The bird of paradise alights only upon the hand that does not grasp.