The World of Darkness is our only confirmed instance of dimensional travel so far. While it factors into the Shadow of Mhach plot, it's never used during the story. Whatever's going on at the Orbonne Monastery is unclear - while I was of the mind that it was indeed travel to the First Shard when shown in the trailer, in-game it was cleared up and doesn't appear to be anything more than an aether-bleached area of the monastery in question. Assuming what happened there was dimensional travel leaves out some very key elements - it took a lot of energy to get to the Void, and from what we've been told traveling the Aetherial Sea to reach another Shard requires sacrificing one's physical form.

What is Il Mheg? What's with the light? Couldn't say yet. There's just too many unanswered questions up in the air that need to be resolved in 4.56...

Finally got Okita, and damn! Stick "Talk on the Hot Sands" on that baby along with "Fragments of 2030" on the other two and watch her crit everything to death! And I only had to acquire no less than 5 (!) copies of "GUDAGUDA Poster Girl" and get spooked by Ozymandias (yay!), Mordred, Beowulf, Astolfo, and Cas Gil to get her (the last of which I accidentally fed to her...)!

... now, there is nothing I want until the Christmas banner except for the GSSR. Nothing. Nothing. (I tell myself. F/GO is really damn stingy.)