The sword

Ruby is the blood soldier, feared but forgotten
She lives with one reason, to kill
She lives with a past that is hunting her down
She is natures balance, she is natures revenge

Ruby is only known as a criminal, no one knows about her family, her past, or her live purpose. After a simple but dangerous fight she gets offered a deal by the king himself, to save the prince. The price is his hand, but could also be her life. To save the prince she has to enter the house of the most dangerous man in the kingdom, Mark Thantov, her biggest enemy.