Star in the North Sky (T*witches)

Seeing your father die at five years old is one thing, but having the power to predict death is another.

For twenty-one years, the Princess of Coventry had been searching for her sisters to complete the prophecy she had foretold not too long after the dreadful Halloween night.

For twenty-one years, her mother had hoped that Astraeus's prophecy of her sisters was true. The twin daughters of the sun and moon shall regain the kingdom's name.
However, there was one thing that Astraeus had not told her mother and Queen. There was more to the prophecy she had foretold. If the twin daughters of the sun and moon were to save Coventry, then the Star in the North Sky would perish.
The King and Queen treasure the Star in the North Sky the most. Astraeus has to decide whether she is willing to pay the price, knowing there is no happy ending if her prophecies are correct.

Which they always are.

*DISCLAIMER. I do not own T*witches, only Astraeus*