I recommend a novel about a male protagonist and his younger sister who survived when their parents were hunted by enemies. However, the younger sister was transformed into a dual personality.

I recommend "Peach Blossom Parting". The female protagonist in this book was also a princess, and the emperor was her brother. There was also a plot of a son-in-law and the king of an enemy country, but there was no plot of twins. However, I believe that you will like this novel as well. I hope you like this fairy's recommendation. Muah ~😗

😋I recommend you a novel,'Tong Hua blooms in spring'. The female protagonist's sister is the man's sister, and she's mute. I hope you like my recommendation, Mwah ~😗

The first chapter of the novel " One Sword King " was " Who dares to touch my sister!" This chapter described how Ye Xuan's younger sister, Ye Ling, came to question the Great Elder despite her illness when she heard the news that the family wanted to depose Ye Xuan. This showed that Ye Xuan was very determined to protect his sister and would not allow anyone to hurt her.

"Princess Consort's Heart"

The following are some recommendations from ancient novels where the main character had a younger sister: 1. "Brother Above" by Cheng Seventeen. This novel told the story of the female protagonist as the male protagonist's stepsister. The two gradually developed feelings for each other in the process of getting along with each other as a family. 2. " My Sister is the Best in the World ": This novel tells the story of the main character, Chen Changqing, abusing the male lead for his sister. 3. " Peerless Emperor's Favorite: The Unparalleled Mute Queen ": This novel tells the story of the female lead, Ruan Enjing, and the male lead, Meng Jingyan. The female lead has a younger sister. Please note that the novels recommended above may not completely meet your needs, but they are all works of the main characters in ancient novels who have sisters.

The following are some novel recommendations about a younger brother looking for his sister: 1. " Paranoid Bamboo Horse Seeking Love Story ": This novel tells the sweet story of a paranoid bamboo horse younger brother chasing his sister in love. The emotional tone was secret love, brother-sister love, and mutual spoiling. 2. "Good girl! Call Me Older Sister ": This novel tells the love story between an older sister and a younger brother. The younger brother was in love with the older sister, and the older sister had always been oppressed by the younger brother and had to cook for him. The plot of this short story was compact and the writing was smooth. 3. " President's Brother Dotes on Me ": This modern romance novel, although it doesn't completely fit the plot described, it fits the plot elements of a brother-sister relationship. In the story, the older sister adopted the younger brother. The younger brother was outstanding but also very evil. Later, the younger brother's ex-girlfriend came to find him, and there was a misunderstanding between the two. Please note that the above novel recommendations are only based on the search results provided. There may be other related novels that have not been mentioned.

I'm not sure about the name of the novel you mentioned because you didn't provide enough information. However, if you are looking for a novel where the female protagonist transmigrated into the novel and interacted with the male protagonist, I can provide some possible novel titles: - "Return to the Ming Dynasty to be the Empress." - "Time Travel and Anti-Time Travel" - Startling Step by Step - "A concubine's daughter is poisonous." - Hua Qian Gu - 'Chu Qiao's Biography' These novels all contained plots where the female protagonist traveled to ancient times and interacted with the male protagonist. I hope these novels can provide you with some inspiration.

Here are some recommendations for novels where the female protagonist is the younger sister: 1. Dressed as the Sister of the Female Lead Who Escaped from Marriage 2. "After Dressing As The Younger Sister Of The Male Lead" 3. "The Cheap Sister Dressed as the Female Lead." 4. "Substitute Sister" These novels all involved the plot of the female protagonist transmigrating into the novel to become a younger sister. They might provide interesting storylines and character development. Please note that the author and plot details of these novels may need further investigation.

The following are a few recommendations for romance novels where the male lead has a sister: In the story, the younger sister, Kong Lingxin, loves the male protagonist on behalf of her sister. The theme is a wealthy family. 2. In the story, the younger sister married into a wealthy family in place of her older sister. While she loved the male lead, she also had to investigate the truth. 3. " The Eldest Daughter of Rebirth ": The female lead has a younger sister. The family favors the younger sister and doesn't like the female lead. Moreover, the person the female lead likes also likes the younger sister and not herself. The above is a romance novel with a male lead and a sister recommended according to the search results provided.

The younger brother of the female protagonist won the competition and went to France to look for his sister. The younger brother had a girlfriend, but the younger brother loved his sister and was not his biological sister. In the end, the younger brother broke up with his girlfriend and went to France to look for his sister.