First of all, make sure that the Orihalcon is the first item in your first person´s(the one
farthest on the left in battles) inventory. To achieve this, go to the Items screen and
while the cursor is on that person, hold L and press A four times. That should bring the
Orihalcon to the top. If it doesn´t, then give anything in front of it to someone else. Now
save your game while standing directly in front of Sunshine in bed. This way, once you load
the file, all you have to do is press A as fast as you can to talk to him, give him the O,
and confirm. You must always do this in exactly the same time every time, as the amount of
time you spend in Sunshine´s house seems to alter the second RNG. Did that make sense? Try
timing yourself and see if it works so far.
Now hard reset. Press A rapidly until it brings up the screen where it flashes " PRESS
START". Now when it starts flashing, " PRESS START" will be bright white for about 1.5
seconds, then it fades out and comes back again brightly. Wait for it to flash three times,
then on the fourth flash press Start right before it fades out again. After pressing Start,
press A as fast as you can. It will load up the file(if it is the first one) and give
Sunshine the O. Proceed to the Sanctum and back. You are now the owner of one Excalibur!!!