The Farplane is a one-room area (and pathway) that you visit while traveling through Guadosalam. It’s purpose is to further develop the characters and the plot of the game.
The Farplane is an area that you briefly visit while in Guadosalam. Refer to the Guadosalam section of the strategy guide for more information:
You can pick up the 
Venus Crest for Lulu’s Celestial Weapon, the 
Onion Knight. Travel back into the Farplane and you will find a treasure chest on the left side of the screen. Open it to receive the Crest.
