lol I think we all know none of 'em are 10/10 games including Link! But ya know at least the others went into depth with their battle mechanics x.x;
Far as I can tell the instruction book doesn't say a thing about this nor anything in-game! Heck the game doesn't even mention rolling/dodges! Nor does it give any detail about Tokio's rank up moves!
"S-Dash+: Increases travel distance of the Slide Dash."
I mean at first I thought this meant increased roll/dodge distance. Nope! It's the X + X Sonic-style homing thing! I dun blame this on translation either. Blames on CC2 for poorly documenting their crap. Sure the games kinda easy an like items its obviously not necessary but still! Its cool to find new things but to never know what they do... bleh! Its pretty easy to pull off once ya got the timing down so if it gives ya invincibility frames, a dmg boost, or whatevers maybe someone'll figure it out.
btw the sound effect which plays is the same as the one when opening the Volcano zones boss door and the flash is steel/silver colored.
edit! here's a pic!