My thoughts before being clickbaited into clicking the above video:
“Wait, what’s the corner stone? is this a 3-4? 4-4? This picture is cut so weirdly. Oh, the upper left is the corner. Okay, so 4-4, attach above, oh, that joseki, okay. [reads] ‘Don’t hane; just extend.’. Wait, what!?”
PS: This is posted before watching the video, I’m sure that the new move is great and I’ll probably start using it after the video, I shouldn’t wonder.
That’s a very cool seki!