The world was in chaos, and Xie Jin, the prince of the subjugated country, was forced to become an assassin to make a living. The country was ruined, the family was destroyed, and relatives were separated. However, he was just a knife of the Assassin Alliance. He had no complaints, he just wanted to find his missing sister and then wash his hands of herself.
But he never thought that his sister had betrayed him.
Once he was seriously injured and fell into the sea, losing his memory. He was later rescued, but he only knew that he had to survive.
No one has ever cared about him, only that person will protect him.
He will be prosperous in the southern and northern countries, in the court and in the arena.
He would be a good knife to use.
Concept: A legend of revenge in the world of martial arts.