The Abstinent Captain Pinched His Waist and Became Red-Eyed, and His Ex Disappeared and Turned into an Undercover Agent

The Heroine Works as an Undercover Agent and Falls in Love with a Drug Lord, but She Loves the Country from the Beginning to the End.

Are There Any Novels About Being an Undercover Agent?

The male protagonist works as an undercover agent and performs a mission

I'm Looking for a Novel About an Undercover Drug Police Officer, Preferably with a Score of 9 or Above, and Don't Want the Memory to Be Exposed.

High-Scoring Undercover Essays

Double Strength! ! ! ! ! ! ! ! !

Is there any particularly good book with two male protagonists and two strong characters, and the plot is not draggy? Please, there is a book shortage recently.