**Look sharp, me hearty, thar be spoilers ahead!**
In the opening scene of the game, how did Sin/Jecht manage to get himself back into the Fayth's dream world? And how did Jecht get into Spira in the first place? Tidus managed because Auron was able to ride Sin to Zanarkand to fetch him, but Jecht apparently did it on his own. I hope you guys aren't as confused about this as I am.