You Sent Me Undercover, So How Did I Become the Boss?

A feel-good novel without a System, featuring schemes, comedy, gang conflicts, technology, weapons development, and a business empire.

The protagonist knows a little traditional martial arts and has hazy memories of a past life. After a family upheaval, he has no choice but to become an undercover informant at sixteen, only to discover that the job is incredibly tough.

In less than two years, he's reduced to living in a van.

Then his body mutates after he is exposed to the blood of an unknown species preserved in mosquito amber from twenty million years ago.

The unexpected mutation restores his confidence. He gradually reforms the gang and eventually becomes a business tycoon.