Musasabi no Mai notes:
Charge version can be DC'd from Ryuenbu. If you think you made a mistake doing a C Ryuenbu and might be punished for it, you can cancel that to Musasabi no Mai to run away, provided you charged down beforehand.
Musasabi no Mai now homes toward the opponent. In previous games, she would do the Musasabi no Mai towards wherever she's facing. This particular info also affects forward charge Musasabi no Mai. If the opponent's on the far corner, Mai will face towards the opponent and hit him on the corner.
Tactics:
You can mess people's timing by throwing in Ukihane every once in a while. I caught someone off-guard around four times because of that.