The Masamune is in all versions of the game; ordinarily, you get it from a hidden chest in Pandamonium (in a hidden room with a high encounter rate, likely pitting you against any number of Red Dragons). The concentration mini-game was added for the PlayStation remake, and its capacity to dispense Genji equipment and the sword came with the GBA port, just in case it hadn't already trivialized the game's difficulty.
His original name is Frioniel. That it's altered to "Firion" in the localizations is mainly due to space constraints.haha Firionel, his name was diff in the NES ersion, in the psp version his name is Firon there are other diff names like the town names are diff