Robert Moves Twice?

[Sakura]

On Chapter 10, I dismounted Robert and let him attack the armor knight on the bridge with Selphina's Bow.  After he attacked, he got the little music note thing on top of his head and another chance to move, even though he doesn't have the skill.  Is this a glitch or something?  o.o;

[Neofox]

Characters with movement stars have small chance of being able to move again after performing an action. You'll know this activated if they whistle and turn colorful again, allowing them to perform another action that turn (although it can only activate once per turn, so there's no getting really lucky and beating the chapter in a single turn).

The amount of movement stars a unit has dictates the chances of being able to move again. Naturally, the more the better.

[Ayanami]

The movement stars gives a 5% chance each, so like having 3 movement stars would represent 15% chance at getting another turn.