after a while yuna and them find out that the guy in the sphere may not be tidus it could be this shuyin guy. and they never say exactly im 54% into the game so they only just revealed it. so I got stupid and said im gonna find out by looking at the credits in the book and the book niether gives you either of their names. so im upset but im glade to because that would of ruined it. so square is very crafty and smart they like to keep the suspence. so you'll want to finish it. oh yes please excuse all my posts i havent been here since i first got the game so i have a lot of things to say.