This is one of the several hoaxes floating around on the web. There’s a list of Known Shining Force II Hoaxes in the secrets section of this site, which explains more about this rumour.
How do I get the chest outside Mitula's Sanctuary - the one on the island in the lake around the temple?
Whenever I go to fight the big guy in armour (The Taros), he just tells me to go away. How do I fight him?
Rohde always tells me that he's busy and to come back later. When I do, he says the same. How can I make him join me?
When I go back to Yeel, after I've been to Parmecia, the town is deserted. What am I supposed to do here?
On the west side of Pacalon Castle, I can see a stairway, but no way to reach it. How can I reach it?
I follow an old man to a room where he says there is a tunnel to Grans Island. When we get there and I kill the monsters, he tells me it's locked. Where do I go from here?
How do I use the promotion items (and can I promote a Paladin to Pegasus Knight / Gladiator to Baron / Vicar to Mastermonk / Sniper to Brass Gunner / Wizard to Sorcerer)?
Whenever I save a game and power-down, each time I go back to play it the save game is gone! Why is this? (non-emulator)