The hidden Dragon: Akatsuki no Yona (Yona of the dawn) fan fiction [ON HOLD]

Kira, Hak's adoptive sister and Princess Yona's best friend/bodyguard. She's known as the Phantom Samurai, all due to the fact that she possesses extraordinary skills and unmatched speed. One day, the murder of the king by the hands of the man she loves, Soo-Won, forces the naive princess to flee for her life with he...