Scrapped Princess Manga Series by Ichirou Sakaki, Go Yabuki

Fifteen years ago, a set of twins a girl and a boy were born to the king of Linevan. Shortly after their birth, a prophecy foretold that when the girl turned 16, she would bring about the end of humanity. To avoid this terrible fate, the king ordered the princess disposed of scrapped! She miraculously survived and was raised away from the kingdom that would kill her. But now she has turned 15, the king's guards have caught wind that she's still alive...and they set out to finish the job!

The epic sci-fi fantasy continues as the lives of everyone in the world hang in the balance! While Pacifica, Shannon, and Raquel flee from bounty hunters, Pacifica crosses paths with a frightened girl who has a dark secret and a fatal wish. After the girl disappears, a mysterious pendant might hold the clue to saving her. The three siblings set off to find the girl, but when they finally locate her, she's not quite what she appears to be...

When the four priests who predicted the "Revelation of Grendel" are found dead, Tasa, one of the priest's daughters, seeks revenge on Pacifica. She hires a ruthless assassin to carry out her vendetta, and the duo sets its sights on Pacifica and her siblings. Is the myth of the Scrapped Princess about to come to a devastating end?!