Super Assistant to the Queen of Music

Playing with sabers and guns, playing with superpowers, ambushing people with high levels, picking up girls and inventing them when they have the time, I'm the only one in the world who can do that!
Gao Yang, the king of the underground world who possessed a superpower, unexpectedly became a personal assistant of the Little Heavenly Queen of the Songs. From then on, he had to protect his employers, fight against evil and laugh arrogantly in the city.
The book was a new book, but the author was an old driver! Uh-huh, they're all old drivers in every way.