I composed my drawings into one animated
GIF image.
I hope you will enjoy it. Bellow is the explanation of the whole
technique.

1. Approach with ayumi ashi, and at the same time lift the opponent's
sword (suri age), and pushing it toward his own forehead (semme te)
2. Put your left hand around the opponent's neck, while doing a
large tenkan with your right leg, pivoting on your left foot. (At the same
time, let your opponent lower your sword and thus disturb his balance)
3. Force the opponent to crouch, as when doing the preparation for
irimi nage in aikido
4. After the opponent starts to rise up, you are already behind
his back, controlling him with your left hand over his face (possible nekote
waza - face scratching, or kubi gaeshi - neck twisting and locking)
5. Put your hamon against his neck.