I'm not too sure but there's a possibility that, "Twilight Princess" is more about saving Hyrule than going of to save the Princess.
And...
SPOILERS:
Zelda gives away her soul to, Midna and disappears after that...
There isn't an Outset Island on Zelda Twilight Princess only in Zelda Wind Waker and other ones.
After beating twilight princess you don't get anything.
Google "Zelda twilight princess game cube walkthrough"
He is the Master Bomb Maker in Zelda Twilight Princess
defeat ganon
The last level on Zelda twilight princess is hyrule castle where you face the final boss ganondorf.
Twilight Princess
Zelda Twilight Princess
no answer possiblego
no
No.
No there isn't