Hong Kong Crossover: Rising to Rule the World as a Barely Clothed Agent

A jobless young man from the 21st century transmigrates to a parallel world, inhabiting the body of Gao Bo, an 11-year-old boy with no parents.

To survive, he enters the underground boxing world under the guidance of the System.

After three years of hard work, Gao Bo finally becomes the champion of the local district. He is also discovered by Madam M of an assassin organization and joins her assassin training camp.

Six years later, Gao Bo turns the tables and takes over her operation. Using the assassins trained by Madam M as his core, he begins roaming every corner of the world.

Before anyone realizes it, he has become the head of a vast organization that cannot be ignored.

Thus, an underground emperor is born.