Tachi dori or tenchi dori ? This is tachi dori, of course.
But tenchi is present in tachi dori as it is present in every Aikido technique: you must rise towards the sky before descending back to earth. The video explains this:
From the moment of the grab, uke tachi's right forearm passes under uchi tachi's left forearm and lifts him off the ground by projecting ki towards the sky:
The ten phase continues towards the sky, with tori's forearm still under uchi tachi's forearm, which is the necessary condition:
If tori's forearm is placed as shown on the next photo on uchi tachi's forearm, tenchi is impossible. Uchi tachi remains stable, and in such a case, the projection is only possible with his cooperation:
