"Rattle" or "Yao Ling"?
The best killer in the world was actually picked up as a homeless man by a young man! Coincidentally, this time the target was this young man, both the prey and the savior.
Kill him brutally, or let him go? If you let the organization go, you will take matters into your own hands.
However, the identity of this young man is not simple. If he is not killed, the whole world will perish on the day of the curse...
Cold, handsome and top SSS-level killer Qin Yuan (attack)
&
Innocent, pure and cute blond boy Yao Ling (received)
Intention: Choose love or duty?