The main background of the story is in the Tang Dynasty. Two brothers and sisters depend on each other for life. The elder brother is ordered to hunt down a killer named "Sakura". When he finds out that Sakura is his favorite sister, what should he do? A thousand years later, the two reincarnated and met again, but they still could not escape the destined tragedy.
This story was originally written for Xu Song. After I finished writing it, I felt that the background of the story should not be wasted, so I kept writing about the organization Hua Shang, and there will be stories about other killers in the future.