Entry location: Inside the Thousand Year Door while fighting the demon
Have all your members in the ultar rank, by the shine sprites, and the red orb thing, also have alot of BP. Go to the casino and win alot of coin, and buy alot of power smashes. Get some shrooms, and have them cooked, into fried shrooms. /:Choice:/ Get extra life shrooms, and have them plain, or cooked/./...ok, After you beat the X-naut Leader, and beat bowser...i hate that part, but you can't beat old school clashes...or can you, any ways, you better heal up, and save. Now you fight the demon, she first starts out as a black aura, then she takes princes peches body... the first time you fight , she doesn't really fight, but as soon as you think you win, she becomes invincable. When you get weak, you then get recovered by peach. Now you fight her but with your all. You better have a but load of FP though. And every time she takes in the darkness, get vivian, and hide in the ground. Don't forget your crystal stars, when you are in a bind use the blue one to regain health, and FP, or when you use up all, or most of your FP use sweet treat.