The male protagonist Tang Jian could originally see ghosts in the world, but one day he suddenly lost ten years of memory and the ability to see ghosts. Alone, he continued to work as a killer for the intelligence organization Shaou, relying on the instinctive killing techniques engraved in his body and his extremely fast reflexes. But he could no longer see the ghost, but the ghost never left him. In the end, he was haunted by ghosts, and he couldn't tell whether he was in the cage or they were in the cage. [The story is quite complicated and I plan to write it into a long story. Update slowly, but won't abandon the trap]