Chapter 9 guide
I cant seem to find the entrance to equistria, and the stone slab at the blissing forest cannot be opened?
Finding and getting the entrance is a little tricky. First off, you have to recruit Lily the fairy (as a Supporter) in Chapter 9. She can be found at the exact place where you found her unconscious. After that, equip her card to Kyuu and get to the area with the huge lake. There's a small hole northwest that was previously blocked by mutated trees. Enter that hole.
In the next area, examine the stone slab and Lily will unlock its magic portal for you. Examine the stone slab one more time and you'll be at Equestria.