But 6D worked even against mac last I played him .-. (Months ago, but still)
its a lot easier in theory than actual playing.
on a 6D block confirm hakumen doesn't know if you are going to:
a. Gravity Seed Stall
B. IAD forward>j.2DD>j.214D~C>ect
C. IAD Backward>another 6D
D. Pizza Wheeeeeeeeeeel ~C
It isn't the only thing I do off of 6D block confirm, but its still a nice tool when the hakumen is prepared to block, not jump.
You can also do 6DD>Normal Pizza Wheel to prevent haku jumping forward, and if he still does, you have barely enough time to throw out a random IAD>Air grab, which has better range than most attacks hakumen would do there (Meter attacks, j.A, J.B, J.2C)
It is really just a random guessing game where hakumen only has 1 approach option depending on what you do.
And at a certain range (half the screen, barely out of 623A range) 6D picks haku off the ground on his dash.
Stealth edit:
You can also do 236A>Grab as Haku can't do anything till he reaches the ground if he blocks 6D