I Have A Super Assistant

Qin Tianlong, a transmigrator, became a sniper in a certain investigation team at the age of 18. When he was on a mission in the country at the age of 22, he was expelled from the military for some reason. Then, he went overseas and became a mercenary. A year later, a mercenary group named DA became famous in the world.

However, in that famous incident, Qin Tianlong realized that he had always been in the world of the special forces.