Double turns missing?

Hi to all!

Is there any special boss, event or location that triggers the double turns? I already managed to beat some superbosses like the General Guy, so the other ones are impossible with the single turn per character, how to activate it? I already ralked with Rosalina and there is nothing, i beated Smithy and General Guy and as i said there is still no signs of the double turn. All my characters are in rank 100  pls help.

Certain accessories grant double turns, but the early ones tend to come with heavy penalties as well.  They aren't necessary to beat the superbosses.

One thing I definitely recommend doing is finding all the hidden chests.  The reward is worth the effort!

ok thanks man i thinked it was activated by a certain event...so the accesories are the ones who grants double turns?

What of them if you can send me hint?

The earliest double turn items can be found in Via Infinito as rare drops from some of the hidden monsters.

Beyond that, you could always ask the old frog what to do.