In the MCU/Marvel with the Omnitrix/Ultimatrix - Chapter 54: Unexpected Change

The notorious imperial court lackey and the meritorious military general were well-known for their mutual dislike, a pair of arch-enemies set in stone. Who could have foreseen the unexpected change in the winds of heaven: the general injured on the battlefield, both legs disabled, and even forced by the emperor to marry his nemesis.  

With one marriage edict, two people with mutual hostility are forced to marry and live under the same roof. Yet after these long days together, they come to the realization that this fellow is not truly devoid of any saving grace/unattainable and high out of reach.

- Description from Novelupdates

Past, present, and future, I will always want you.

Adeline had a plan to obtain her freedom:

Step one: kill the King.

Step two: run away and live happily ever after.

Did that happen? No.

Adeline’s plan was rudely interrupted by a mysterious, yet handsome stranger who stole her weapon at midnight.

Elias Luxton was a heartless King notorious for his merciless antics. He was the monster that lurked in the shadows.

Adeline Rose was a dethroned Princess with a dark past. After her parents’ murder and an super stealing her throne, she flees to the Empire of Wraith and unexpectedly meets Elias.

Elias claimed he knew her. But she didn't remember him. And Adeline wants nothing to do with him.

The problem? Adeline was supposed to kill him, but he wants to marry her.

Will she be able to escape the clutches of this shameless King? Or will she have to face the demons of her past, all alone?

Han Yun was spoiled from childhood.

He survived past his emperor dad and crown prince elder brother, and became an emperor.

He didn’t know how to govern the country, but he was lucky—there was a Grand Preceptor who “assisted” him, spoiling him even more than his father did.

After just a few years, this puppet emperor died. When he awakened, he had transmigrated into the modern world, becoming a third-rate model struggling alone without any loving parents.

Just when he thought he had become a little cabbage that nobody wanted and no one would ever spoil him again, a certain ancient monster of a Grand Preceptor who had lived 1,000 years appeared again… and looked to be doing quite well for himself.

The utterly impoverished little emperor had tears in his eyes: “Beloved subject! Zhen (royal We) have missed you so much!”

Grand Preceptor: “Your Majesty, this minister has waited for you for a thousand years.”

- Description from Novelupdates

Noir, third son of a “beggar noble,” lost his job and was at a loss, but fortune struck just as he was contemplating becoming an adventurer.