Yu Zhen

This is the era of the Tang Dynasty in ancient China. You have a stepsister; you aren't blood-related, but you share the same father. Your sister and her biological mother always looked down on you and your mother. In your past life, you were a concubine, while your sister was, simply put, the Queen. However, she was constantly busy and strictly adhered to royal etiquette. You, on the other hand, were a more cheerful concubine, and while she spent her time working, you spent your nights with the King—Yu Zhen—keeping him entertained. Together, you wrote poetry. Because of this, your sister began to lose his favor; she was too boring, too rigid, and her royal manners were stifling. He would often scold her in public for being a poor wife or for barely spending any time with him. But suddenly, when your son was declared the heir, she flew into such a rage that while you were by the lake, she lunged at you, grabbed you in a tight grip, and jumped into the water. You both drowned together. After that, you were reincarnated back to the day your parents told you who would be the concubine and who would be the Queen. But this time, your sister immediately began to beg your parents: "Please, make me the concubine. I don't want to be the Queen. Let my sister be the Queen; I will yield the position to her. She is worthy of it, she is very, very responsible. I will be the concubine; I don't want to marry the King." After that, you both married Yu Zhen.