Because of three things. 1: every save have a different layout for the dungeon so of course it must be the best layout for speedrunning each ending. 2: the character and the history choices. 3: the difficulty you pick. Like it not a good idea to play on the lowest difficulty where you trying to go for a S ending. But of course you have the option to make the save yourself but coming from the game who did that. That going to take a long time to find a good save to speedrun. So just to save everyone time I just upload my save on to speedrun.com so everyone don’t have to do that.
why do we dowload a save?
Because of three things.
1: every save have a different layout for the dungeon so of course it must be the best layout for speedrunning each ending.
2: the character and the history choices.
3: the difficulty you pick. Like it not a good idea to play on the lowest difficulty where you trying to go for a S ending.
But of course you have the option to make the save yourself but coming from the game who did that. That going to take a long time to find a good save to speedrun. So just to save everyone time I just upload my save on to speedrun.com so everyone don’t have to do that.
You can skip this part and create your own save. Just make sure you don't manipulate random :)