Killer: I Start By Killing A Fly With A Poker Card

The most important thing for a qualified killer was amazing killing skills!
However, Shi Yu was an exception. He was a killer, but he couldn't even hold a gun steadily. He couldn't even fight.
That's right. He was not a qualified killer. You could say that he was a failure of a killer!
Shi Yu was dejected and felt that not even God wanted him to be a killer. However, he decided to carry on to finish his father's wishes.
Then one day, he got hold of a wristwatch and everything changed! "Ding! The Divine Weapon System has been activated..."
"Selecting your first weapon..." "Ding! Selection Success! Your first weapon- poker cards!"
"Ding! Congratulations, you are now skilled at poker cards. You can now make them fly!"
The first task he received after receiving this skill had surprised Shi Yu.
The ordinary poker card managed to cut the surveillance fly buzzing around in the air into two.
This was a fly camera that was as nimble as a real fly!
The doors to a new world opened before Shi Yu. This was the first time he realized that poker cards could be so dangerous!