The Cannon Fodder's Lover Refuses to Submit [Quick Transmigration]

Xue Yan died and was bound by a System that claimed to be for cannon-fodder tops. The System was convinced he had thirty years of professional experience as a devoted simp and would be perfect for the role of a cannon-fodder top: taking a blade for the protagonist bottom and paving the way for the main couple's romance.

Xue Yan came back to life and, for no clear reason, fell for someone who claimed to be the protagonist bottom. He was convinced that his thirty years of professional fish-keeping experience would make him perfect for the role of a villain, getting the protagonist top to take a blade for him and becoming a pain in the neck on the main couple's road to romance.

Xue Yan cried at the protagonist couple's wedding. This was too much. He'd failed, joined their big family, and gotten caught between two men.

World One: ABO

Xue Yan had a beloved Omega in his heart. When that person fell from grace, Xue Yan took him in. Then photos of his lover cheating with a powerful figure were thrown onto his desk, and everyone said they ought to get divorced.

What could Xue Yan do? He loved his husband so much, of course he could only forgive him.

The truth came out without warning: his true beloved had died long ago, and the lover who had been entwined with him day and night was merely an impostor.

Heartbroken, Xue Yan flung out the divorce papers, only for the impostor to knock him unconscious and lock him in a dark room. His pale wrists were rubbed raw by thin gold chains day and night.

After finally escaping the impostor's clutches, he was caught by a vicious wolf and carried back to its den. The wolf's fangs pressed against the back of his neck as it threatened him harshly. "When are you divorcing him? I'm not going to be the other man."

Later, the impostor and the vicious wolf started fighting over who owned him. Their pheromones made Xue Yan dizzy, and he angrily slapped them both. "Get out, both of you!"

World Two: Apocalypse

After the young prince Xue Yan died in his previous life, the person he trusted most personally sealed him in the imperial tomb. Who could have guessed that he'd wake up in a modern-day apocalypse?

When a thousand-year-old zombie meets modern zombies, Xue Yan, a weakling in a fight, doesn't hesitate to latch onto someone powerful.

But why does his guardian look so much like his prince consort? And why does his guardian's fiance look exactly like his older brother?

Dizzy from the realization that he'd been cheated on, Xue Yan wandered onto the wrong zombie king's turf. The next day, the three men got into a fight and demanded to know whom he would go with.

As they closed in, Xue Yan could only yell in impotent fury: "I'll go by myself!"

World Three: The Villainous Master of the Dragon Hero

World Four: The Cold Researcher in a Monster World

Notes:

1. This is a story with a bottom protagonist.

2. The top is split into different versions. In some worlds, he fakes his death, but the ending is definitely happy.

3. In some worlds, the protagonist has no memories, only the memories of the role he's playing.

Theme: What do you do when every pig wants to root up your little bitter melon?