Yellow_ turquoise: The fate of the second half

In the beginning of time, the sky was one—there was no day, no night. But two sisters, Sol and Luna, born of light and darkness, fought for dominance over the world. The battle was so fierce that the sky split apart and the sun and moon were separated. To end this war, the gods built a castle that was a gateway between night and day. There, the sisters' faces were carved into the moon—half light, half dark—so that they would forever watch each other, but never meet. Now, legend has it that only one who can accept balance in their hearts will be able to break the spell and return the sky to its former destiny... but is there anyone like that?