Fantastic SNES-style RPG – RPG Bonds of the Skies Review

Terrific game, start to finish - but I am wondering what the "Key to the Master's Room" is used for? I beat the game, all the way through Lumina, and - still haven't found that room...? Anyway, please keep the old-school RPGs coming, Kemco! I'll keep giving you my money... :)
Review by Catman 63 on RPG Bonds of the Skies.