The Little Undercover Agent and His Nemesis

After dying unexpectedly, Zhou Bai has no choice but to bind himself to a System and begin transmigrating if he wants to return to his own world. His mission is to eliminate key figures in each small world who threaten its balance. And without exception, Zhou Bai's identity in every world is that of an undercover agent. He is delighted: This is what I used to do! I'm good at this! But Zhou Bai is completely outmatched by his targets. He fails every mission and gets punished by the System. Some reasons Zhou Bai can't complete his missions: #My Darling Is Such a Tease# As an undercover agent in the demonic path, Zhou Bai's mission is to harm his master. After he slips up, the System punishes him, but his master assumes the demonic path has threatened him. His master immediately wipes out the demon realm. "Fear not, my disciple. The demon realm is gone, and no one in the world will ever threaten you again." Zhou Bai: Who threatened me?? You kicked me out of the demonic sect! How am I supposed to finish my mission?! #My Darling Knows How to Act Cute# The Beast Emperor, whose combat prowess is off the charts, drinks water spiked by a human undercover agent and reverts to his juvenile form. He flips onto his back and lets out a little "meow." Zhou Bai's heart melts at the sight. He immediately drops his weapon, covers his face, and surrenders. "I can't bring myself to hurt him! He's too cute!" That night, the Beast Emperor returns to his adult form and, while Zhou Bai sleeps, carries the audacious human disguised as a rabbit back to his den. #If I Had to Give a Reason, I Don't Know Why, I'm Just Somehow Scared of Him QAQ# Zhou Bai becomes the vampire progenitor hiding among hunters. He plants his hands on his hips and boasts, "This time, my bloodline can suppress yours. I'm not afraid of you anymore!" His target, a hunter, grabs Zhou Bai and presses his head against his own neck. With an impassive expression, he orders, "Open your mouth. Bite." Bullied into tears, the vampire progenitor trembles as he bites down. "Eek!" Zhou Bai fumes: Why does he always have me completely under his thumb?! (つД`) The love interest says: Because liking someone means being unrestrained, while love means holding back. Reader's Guide: 1. The protagonist's career is not the focus. The brainless author mainly wants to (try to) write a sweet romance. 2. One-on-one, both are devoted only to each other, and every world has a happy ending. 3. [Notice: I've been busy in real life lately, so updates may be a little irregular. I'll post a notice in the blurb when daily updates resume.] Theme: Live well, and keep working to overcome any difficulties you encounter