Was this novel about a sickly female protagonist who saved a young demon king in a western fantasy world and later married the demon king?

Answer 1

I might not be able to satisfy your needs, but I'll try my best to recommend a novel that is most relevant to your needs."Cultivate, My Demon King" is a light novel written by the author. It's a fantasy novel. The general plot of this novel is as follows:

He had accidentally traveled to another world and suddenly picked up a human daughter. "It's impossible for the Demon King to raise a daughter." "Mmm, it smells so good!"
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"Catastrophe of the Crossdressing Boss" was a light novel written by the author, Xia Liang. It was an original fantasy novel. The general plot of this novel was:

[Help: A cross-dressing boss transmigrated once, but the demon king of the Otherworld took a fancy to me and wanted to marry me as his princess. What should I do?] I'm waiting online in a hurry…
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"The Demon King Dotes on the Domineering Concubine" was a fantasy romance novel written by Butterfly Dance Yixue. The general plot of this novel was:

[This article is one-on-one.]
When a goddess met a demon king, their love died because of their different missions. He killed people, she saved people, exhausted body and mind, the goddess escaped and self-destructed, but was accidentally drifted into the temple by a soul from another world and occupied it. When the soul from another world became the goddess, why did she seal her duties, and the gods and devils all died.
The demon king messed up his emotions, went berserk because of love, and also caused chaos in the world because of love.
In the Mythical Continent, the various races were in turmoil and were divided in the midst of war.
When the Mythical Continent was filled with sorrow, the princess of the Elf Kingdom went against her elven nature and played with the heroes of the world.
The bloodthirsty Ghost King of Darkness, however, had fallen into servitude just because of a glimpse.
When demonic artifacts were scattered all over the world in the chaotic times, when greed blinded the divine artifacts, how would this shocking battle end?
Was it just because of love, or was there another conspiracy?
[Fragment 1]
"F * ck! To be able to encounter such a thing, this bone ring is really high-class!" Looking at the body of the soul, he observed the people around him and said something different from his calm and elegant expression. On the other end, before he could digest the memories of the owner of this body, the god urged him to go to the human race to carry out his duties. "Oh my god, what's going on? This is the world of gods and devils! Are you kidding me?!"
On the first day of his soul transmigration, he was questioned by a devilish and handsome demon king, and he was even captured from time to time to be tested. Was it just to bring back the soul of the person he missed? I'll run, alright?
[Fragment 2]
"God Lord, the Divine Lord has already agreed to the Godfiend contract. You will be the betrothal gift."
The Goddess, who was originally indifferent, immediately cursed. After scaring off the group of little gods, a glint flashed across her crafty eyes."You want me to be a sacrifice for the politics of the God and Devil World? You've made a mistake."
When a certain someone rolled up his divine sense to arrange the Roman road for him, the gods and devils were in chaos, but a certain someone, without any shame, enjoyed this rare satisfaction.
[Fragment 3]
When the conspiracy surfaced, a certain woman frowned and clenched her fists."What lousy rules? I'm not playing anymore!"
"Since you don't like the rules of this world, I will baptize you with the rules of this world again."
His arrogant words moved his cold heart slightly. However, before he could say anything that he did not mean, he was swallowed by the arrogant and cold man.
The introduction is incompetent, please read the article ~.
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"The Gorgeous Witch's Journey to the Other World" was a fantasy romance and magic fantasy novel written by the author, Jimo Liangqi. The general plot of this novel was:

[1v1 Twin Strong Twin Pure Growth-type Favorite Story] The mysterious child, Alice, who carried the Soulless Crystal from the prophecy, suddenly appeared in the Wizard Realm. Sixteen years later, in an accident, she activated the prophecy early. The forbidden curse of the Dark Demon Ceremony, the Love Curse, connected her life to a prince who had lost his soul, and a "demon" soul was sealed in this prince's body. The Youlan Tower and the mutated elves appeared one after another. The Xuanyuan Empire's floating continent was constantly in turmoil. She had been working hard to return to the Wizard Realm, but she had unexpectedly found that she was carrying the fate of the entire world. Was it to escape or to bear? Rebirth or destruction? In the midst of the waves and clouds, who was singing loudly and who was whispering softly. In the face of love, conspiracy, and expectations, where should she go…
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The book,"A Demon Daughter at the Beginning", was an urban supernatural novel written by the author, Yu Ru Tongbei. The general plot of this novel was:

Sign in a demon daughter at the beginning? Save the princess of the demon race? Heh, what use do I, the great Demon King Qin, have for women? Women will only affect the speed at which I draw my sword! However, if it was a daughter…hehehe…
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"Crazy Woman: Demon King, Slow Down" was a fantasy romance novel written by the author, Jiu Li. The general plot of this novel was:

Born as a spirit stone, it should have become an immortal magic treasure, but it turned into a beautiful witch and was killed by the heavens?
She bumped into the peerless demon king who had bathed the world in blood. He was gentle and indulgent to her, but he was killed by someone?
Heaven and earth bullied her, humiliated her, and treated her unfairly. Everyone stopped her, stopped her, and wanted her to disappear.
Alright, in that case, she would destroy the world, kill people, kill gods, and resurrect all demons!
Who said that it was impossible to defy the heavens? The crazy woman was furious."Husband, attack!"
In an instant, the heavens collapsed and the earth cracked. The Demon Lord's blood-red eyes split open as he tore her clothes."Alright, I'll do it if I say so. I won't refuse!"
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"Genius Witch: Demon Empress, Don't Run" was a fantasy romance novel written by the author, Valiant Song Under the Moon. The general plot of this novel was:

She was the most honorable princess in the Magic Continent, and she had the strongest backing in the Magic World, but she did not know her own identity. She had refined countless top-grade potions, held divine artifacts as toys, stepped on heaven-defying leveling speed, and possessed an unshakable powerful soul. When the innocent her stepped onto the path of cultivation, she met him by accident. From then on, she began to be entangled with him, chasing and waiting for him. He was aloof, cold, arrogant, and domineering. Other than revenge, he was cold to everything else. Only when he was gentle and caring to her, he doted on her, loved her, protected her, and put her in his heart, but he always pushed her away. It was because he wanted her to be well and carefree forever.
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"Big Boss's Quick Journey" was a sci-fi space-time travel novel written by the author, Cyan Decay. The general plot of this novel was:

All the creatures in the six realms knew that the Demon King of the Demon Realm had a sister who was the most beautiful woman in the six realms, but they did not know that the Demon King's appearance was even better. The mutual jealousy between sisters that you imagine doesn't exist. All the demons in the demon world know that their demon king dotes on his sister the most. He can't wait to give the best to his sister. Unfortunately, the good times did not last long. His sister, who had grown up in the palm of his hand, was framed and killed. The Demon King also embarked on a journey through time and space to find his sister by chance.
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"Dumb Princess: Raising Her Majesty the Demon King" was a fantasy romance novel written by the author, Swaying Candle Shadow. The general plot of this novel was:

What was that? This boy was the future World Annihilation Demon Emperor?
She had become the princess that the future Demon King had left in the palace? That won't do. The Demon King is mine?
What? The Demon King is an idiot, cold, and often suffers losses? Let's see how the cute little bride lures the demon king to the path of destroying the world.
Ah, what? The enemy was an apostle of the god race, but the demon race didn't listen to the demon king?
Although the princess bride was very upright, in order to pursue the secret of her birth, she would not hesitate to destroy the world...
In any case, the Demon Emperor would accompany her.
This was the story of a demon king who didn't want to destroy the world being lured to the throne of bones by her adopted bride!
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"Little Woman in the Other World" was a fantasy romance novel written by the author, Hopeless Life. The general plot of the novel was:

In this day and age, everyone was capable. When they came to the other world, they were all masters who could call the wind and summon the rain. Why did a little woman like her, who had no ability or skill, come to the other world? At the very least, he should give her a magus or a mage god. If that didn't work, he could also get a warrior or something to play with. What did he mean by not having magic power and not being able to cultivate battle energy? It couldn't be that tragic, right?
Fortunately, the heavens had eyes and gave her a super arrogant servant.
To see how a little woman could survive in another world...