KH3D Getting back to the portal

[mfampait 49]

In the grid there's a link portal by the portal, but I have no idea how to get to it

[VanitasisKirby 1,227]

I haven't seen any portals in the Grid yet. If you have no idea how to reach it, try Flowmotion. Treasure chests are harder to find because of flowmotion, so that may be why you can't reach it. Just try bouncing of the walls like I do

[NumberXIII.Roxas 64]

If you mean the final area with Riku, you can only get to it from the world map after you beat the grid.