Justiin

Does anyone know the locations of the 'cracks' in the dream Lilith is referring to when you talk to her on route 2?

Yes! You get one after winning the Blackview City Battle House Tournament. You can sign up for this tournament in the Rosetta fanclub, which is the house with the black square on the right side of the market. After winning the tournament you can claim your Exp. Share from the person behind the counter in the Battle House.