Randomly found out how to warp to various parts of the game using the fight with Yuffie.
How it works: Die on a fight outside of the world map.
Load a save that can fight Yuffie in one fight.
Fight Yuffie on the first battle after loading.
Enjoy the warp.
Tested quite a few areas, Could not warp to the world map, you can even warp to Safer Sephiroth.
Some tirggers don't load properly tho. You could use to this get many boss items as well. Not so useful in a speed run sadly. -- www.twitch.tv/neohart/c/2266897&utm_campaign=archive_export&utm_source=neohart&utm_medium=youtube