I'm not sure. It depends on the specific context and source of 'Sister Brothers'. Maybe it's based on real events, or it could be completely fictional.
Another plot could be that the two brothers and their sister are in a magical world. The sister has a special power to communicate with animals. The brothers protect her while she tries to find a way to break a curse that has been put on their land. They meet different magical creatures along the way, some helpful and some not, but they persevere until they succeed in lifting the curse.
One great 'Brothers Conflict OC Sister' fanfiction is 'The New Sister in the Asahina Household'. It has an interesting plot where the OC sister brings a fresh dynamic to the family. The author does a wonderful job of portraying her character development as she navigates her new life with the brothers.
I recommend "80 Blessings, Bao Jiaojiao," the story is about a female protagonist, Su Yi, and her family members, including three big brothers and a younger sister. Each brother had his own personality and characteristics. One was a business genius, one was a big shot in the entertainment industry, and the other was his father after rebirth. As for his sister, she was a true blessing, allowing Su Yi to slowly fly away. I hope you like this fairy's recommendation. Muah ~😗
"Don't Be Afraid, Junior Sister" was a story about a junior sister and four senior brothers. It told the story of an otaku, Li Mu, who became the eldest senior brother of Lonemoon Sect in the Xianxia game and had four stunningly beautiful junior sisters. But in reality, he was just a good-for-nothing villain. He was tired and busy in the cultivation world, but he still had to work hard to make a comeback.😋I recommend this novel to you. It's an interesting story of a villain's counterattack. If you like it, you can read it. I hope you like it. Muah ~
The relationship can be one of shared secrets. Maybe they have a secret treehouse where they go to talk about their day, their hopes, and their fears. They trust each other completely and no matter what problems they face outside, they know they can always turn to each other in their special place.
Develop strong relationships between the OC sister and the brothers. Each relationship should be different. Maybe one brother she has a more antagonistic relationship with at first, while with another she has an instant connection. Explore these relationships through different situations and dialogues.
One great Draco - Harry brothers and sister fanfiction is 'The Malfoy Heir and the Potter Sibling'. It has an interesting plot where Draco and Harry discover they are long - lost siblings. The story does a great job of exploring their relationship and how it affects the wizarding world around them.
"The Legend of the Spirit" is a mystery detective and horror novel written by the author, Little Ghost Seven. The general plot of this novel is as follows:
The sister chapter, Evil Bones Yin Yang, was a new book. His strongest ability was Spirit Conspiracy. He was meticulous, ruthless, and good at planning. She was the only one left in a huge family overnight. She became an orphan because of a family massacre. She had only one belief in her life, and that was to avenge her loved ones. Those who stood in her way did not have a good ending! [Love 1v1, the only male lead is Zong Rusui.] Her previous life was a mystery, and the male protagonist silently helped her walk the path of becoming a god again. A small part of this article is about supernatural beings, opening up a different world of spirits! The content is extremely comfortable, and the emotional part can be sweet or salty. Come quickly! Purely fictional, please do not compare with reality, thank you.
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" 100% Favor: Goodnight, Vampire!" This book was written by the author, Lady Fujiko. It was a fantasy and magical romance novel. The general plot of this novel was:
She was just an " ordinary " human girl who had just graduated and was dumped by her ex-boyfriend. A chance encounter had made her his exclusive " blood bag ". He was the heir of one of the three strongest families of the Blood Clan. He was a boss outside. It seemed to be a foreign trade company, but in reality, there was another truth. The people around him, including himself, had unspeakable mysteries and secrets that were called " taboos."
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" Vampire Farewell " was a fantasy-mystery fantasy novel written by the singer, Huan Ye. The general plot of this novel was:
Vampires? Go to the side! This was the world of half-vampires! Absolute beauty? What was so strange about this? Who could resist the charm of a mixed-blood? Subverting the traditional impression, he walked into the emotional world of a half-vampire and unveiled the trace of tenderness under the icy mask!
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" Poisonous Sister " was a fantasy romance novel written by the author, Liu Anhua Ming. The general plot of this novel was:
A female Taoist priest with a belly full of evil ideas met the top ten vampires that women around the world could not resist.
China does not engage in racial discrimination.
But PK or Fusion? It was indeed a problem.
Aiya, don't bite! Her sister was poisonous.
[Group ID: 72189398. Question: What's the name of Leon's son?]
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" Older Brother is a Demon " was a modern romance novel written by the author, I Am Moles, I Am Mo. The general plot of this novel was:
There was a legend in City H that a long time ago, a group of people who were born from mating with demons came here, and all the families who inherited that blood would prosper. Among them, the atavism that deeply inherited the demon blood was the child born on the same day as those ancestors with the same attributes. Every family treated these children as reincarnations of their ancestors and raised them together with the entire family.
However, because they were raised like gods, they lost the concept of kinship, love, and friendship that normal people should have. They would live alone forever, so he…
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" Don't Run, Vampire " was a fantasy romance novel written by the author named Opaompa. The general plot of this novel was:
She was a true vampire fanatic. One day, she suddenly met a vampire prince who was passionate about studying humans, and so the story began…
" Thank you, cannon fodder, for providing the cover."
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" Vampire's Love: The Vampire's Favorite " was a fantasy romance novel written by Forever Worriless. The general plot of this novel was:
A high school girl broke into a small town where vampires lived and became the deskmate of the Duke's heir, His Highness Morris. On the first day of school, she was attacked. The handsome vampire boys appeared one after another, and she was involved in a deeper mystery. As the witch doctor's bloodline awakened, she discovered a huge conspiracy behind her.
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" The Blood Lord of the Other World " was a fantasy novel written by the author. The general plot of the novel was:
A tear woke up the zombie's soul, and the world was shocked by his bare hands. The friendship between humans, ghosts, and demons was revealed, and they called each other brothers for a lifetime. Yi Ai was originally a thief from Earth. He was killed after stealing the Tear of Zombies, but he was reborn in another world. After his rebirth, he was abandoned by the roadside and became an orphan. At the age of 18, he swallowed the tears of a zombie by chance and turned into a zombie.
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" I Became the True Ancestor of the Sanguine in the Otherworld " was a light novel written by the author, Descent of Collapse. The general plot of this novel was:
Blood Breeds were also known as vampires. He often appeared in various films and television works. It gave people a cruel, bloody, and mysterious image. However, after our protagonist transmigrated to another world, he discovered that the vampire he had become was a little different from what he had imagined. He seemed to be able to do all the legendary abilities of the Blood Race, but…wasn't there something wrong with his gender as the True Ancestor? PS: Infinite flow…
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In order to save my sister, I moved the entire internet with a national style painting. This book was written by the author, Yi Duo Tian Tian, and it was a novel about urban special abilities. The general plot of this novel was:
In her previous life, after her parents passed away, Lu Sui and her sister stayed at her uncle's house. In the end, this family was a vampire! They took away their parents 'compensation and were extravagant. They were mean and stingy to the siblings. Their sister was already dead, but they still tricked Lu Sui into earning medical fees. After his rebirth, Lu Sui returned to the time before his sister died and bound himself to the Soul Painter System. With his three-and-a-half-year-old cuddly sister, he tore apart his best relatives, slapped his vicious peers, and embarked on the path of explosive wealth! Little Milk Dumpling was his most fanatical fan! And he was a crazy demon who doted on his sister and crazily amassed money. What was that? His little sister had even tricked a sister-in-law into coming back? It was great to have a younger sister!