Dust Wind

There’s SIS in great Britain, CIA in the US. In Huaxia, there’s Dragon Division, known as the mysterious power of the East.
When a soldier that originally failed to be selected to join, appeared on the Dragon Division’s list again, no one noticed, that this inconspicuous and humble-looking guy was actually the Dragon King of the division, the one that’s most difficult to deal with.
Mercenary: “Report, our squad is under attack, suffering heavy casualties!”
Commander: “How many enemies are out there?”
Mercenary: “Just… just one! There’s a joker card in his hand.”
HQ: “What?! Hurry, retreat!”

Ace of The Dragon Division

  An agent, who had been selected through many rounds and completely brainwashed to work for the government, was brought into the most confidential sealed interrogation Hall.


  A higher-up walked in with a folder and looked at the guy sitting opposite him.""Drizzt, there's a mission here. If you want to accept it, you will have a new codename: 10! Of course, that was when you completed the mission and it would be 10! If the mission fails, it will be called 0! If you fail, all your British identities will be removed. You will be an unregistered person. No one instructed you to do this. You can only choose death! You don't even exist, do you understand?"


  Drizzt's face turned solemn. He knew that the selection this time around was not simple. It must be an extremely important mission.


  If he failed the mission, he would be dead!


The reason it's SSS-class