Undercover: Ten Years Later, I Became a Big Shot in the Organization!

Any Novels About Going Undercover?

Stories with a male lead who goes undercover and carries out missions.

The Protagonist Single-Handedly Plays Every Member of an Organization and Summons an Entire Organization

The Protagonist Builds a Power Base with Assassins and a Secret Organization

None.

I’ve Pledged My Life to My Country. How Could I Give My Heart to You So Easily?

Any sweet romance novels like this? Female-oriented readers, please don't click in by mistake! Both leads should pursue each other wholeheartedly!

Going Undercover for the Country, Only to Be Misunderstood by Everyone

Looking for Stories Where the Protagonist Goes Undercover in the Villains' Camp and Rises Through the Ranks

Anything with this kind of plot will do.

The Protagonist Saves Humanity, Only to Be Scorned by the World