Only his real swords would have Haki in that case. And in that case, the attack won't be even since 3 swords have more power than the other 6.
He coated his real swords. So the example does not prove anything at all.
He coated his real swords. So the example does not prove anything at all.
I guess it really depending on how the technique works. At this time, I believe it's an illusion that's being created thanks to his powerful spirit and speed. As in, he's moving his three sword so fast it look like he has nine swords.