i'm learning/routing a difficult run of Castlevania: Symphony of the Night for PS1.

this run uses precise out of bounds glitches to get to the library as fast as possible, to get the fairy card
the fairy card can be used to pause during a save, which can be used to corrupt the save file. 

if done properly, I can then create an overflow glitch using the swap mechanic in the inventory.
from there, I arrange my inventory very carefully to write code, which I then run. 

this code calls the best ending to play, and the run is then complete.