the last match not having a second player, leaving Mai to do some training with an EX exhibition (I like the new EX kachosen in particular). Also they show Mai's meterless rush ending in musasabi no mai, so now the remaining question for that potential corner combo I mentioned is "How fast does she recover?"
So, you were right. Mai rush combo without meter finishes with her Musasabi. Now the question is does this lead to somewhere? What can Mai do after that Musasabi? In KOF XIII you could cancel her Musasabi in Ukihane (air command move, knees fall). And now she can connect stC after Musasabi...
Anyway, I really regret she only have that lovely command move in her rush

But is nice that Mai rush combo is in the air. That gives her a more aerial ninja flavour
I'm loving the new EX Kachousen. At the beginning I couldn't tell any difference between normal version and EX (I was expecting multiple fans projectile) but then I saw that second hit... So, I deduce that EX Kachousen is for combo now other than stop zonners like in KOF XIII