The Knife of the Traitor (2012)

Bones and guts, bones and guts.
The Kingdom of Ulla was made of the bones and guts of their enemies.

The new successor to the throne was the bloodthirstiest of all the heirs.
But inside the kingdom was a traitor.

He brought down all.
Even the new successor.
And all traces of her vanished mysteriously...

...Until today.

Lady Os has awaken from her cursed slumber…with a knife in her neck. Search the tower to find the culprit!