Final Fantasy XII: The Zodiac Age - 100% Guaranteed Seitengrat Bow

After spending some time examining the RNG, I've discovered a way to consistently acquire the Seitengrat Bow, the ultimate weapon of FF12: The Zodiac Age.

Steps:

1) With the Diamond Armlet equipped on Vaan, make an auto-save outside the Skyferry heading from Rabanastre to Nalbina.

2) Close the game completely and reboot it from the PS4 menu

3) Load up the auto-save and hold up on the left stick so Vaan starts off running

4) Count each time his left foot hits the ground. Walk in circles, but be back by the door when his left foot hits 32 times. Go inside and immediately come back out.

5) Check and see if the invisible chest spawned upstairs. If not, close the game completely and try again. It looks like your timing needs to be exact, and it's difficult to reproduce consistently. Keep in mind the steps are only used as a way to time the RNG. You might find using a stopwatch to time around 21 seconds before entering the door to be easier.

6) Once you have it though, you're golden. Wait until the kid reaches the corner near you four times, and after the fourth time watch him as he walks back to his parent.

7) As soon as he stops, press X. The Seitengrat Bow should be yours.