in kingdom hearts 2 when do u get to fight sephiroth?

Question

i'm alredy in the world that never was and and i never got to fight sephiroth

Answer 1

You'll need to head back to Hallow Bastion/Radiant Garden. Head back to where you fought Demyx (the water guy) and keep heading back to where Tifa, Cloud, Leon and Tifa helped you fight then to the crystal crevice. Beyond here is Sephiroth (right past where you fought the 1000 heartless) Be warned, he's really tough to beat, don't take him on until you have high attack and at least on level 80.