Before the night grew too deep, two people met in a secluded corner. Although it was not late, it was dark enough that those who met could not see each other's faces.
They didn't need to know what each other looked like, spies always shunned this, even those about to be on the same side would not know each other's appearance. They abide by the nothingness of the shadow, existing briefly when necessary, and when not needed, it was as if they never existed in the world.
"Long Ye is a rather terrifying person, you must be careful," one of them said, surprisingly in a woman's voice.
"I will," the other person replied, in a man's voice.
In the darkness, the only known fact was that the two were a man and a woman. As for other clues, there were none at all, after all, there was only the sound of male and female voices.
The man said, "I was supposed to die, but I didn't, so I have to disappear for a while."