Can you recommend a novel about a sister falling in love with her brother? The sister is reborn after being killed by her brother?

It was a fictional novel set in ancient times. The siblings depended on each other for survival. The older sister was extremely powerful. In order to protect the younger brother, she interfered with the government. Then, the younger brother indirectly killed the older sister in order to seize power. Later, the older sister was reborn. Of course, most of the story happened after his rebirth.
PS。He was so deeply in love with that princess that he did not hesitate to hurt himself to keep his sister.
This was the only one that he had read halfway. Later on, because he didn't know what the name was, he couldn't find it.

Answer 1

I recommend "The Eldest Sister Reborn into a Love Rival". This novel tells the story of the general's daughter, Xie Siyuan, who was reborn into a love rival and found that she was killed by her younger brother. She used the opportunity of rebirth to defend herself and at the same time, she started a love story with her brother. I hope you like this fairy's recommendation. Muah ~😗