Getting Married Alongside My Sister

[A reborn secondary female character + a concubine brought along as part of a dowry + harem rivalry + an ancient emperor as the male lead] After Qi Wanying died, she opened her eyes in her own funeral hall. There, she saw her husband fall in love at first sight with her widowed younger sister. Forced to watch her husband and sister spend their lives in love, Qi Wanying finally reached the end of her days. Then she became a young lady again. Given another chance, she would make up for her regrets. Qi Wanyue had thought her life would be like that of her sisters: when she came of age, her family would choose a suitable husband for her, and she would marry and have children. Who could have guessed that an unexpected turn of events would make her her elder sister's accompanying concubine? She couldn't understand her sister's decision, but since her sister had shown her kindness, she continued to treat her with respect. After marrying alongside her sister, she had to respect her sister, now her principal wife, and her husband. Two great mountains would always weigh on her. That was the lot of a low-ranking concubine. Her own mother had shown her as much through her tragic end. Qi Wanyue had thought she would simply live out her life quietly and dutifully. But the human heart is always full of desire. No matter how often she warned herself to know her place, she still longed for what she could not have. She wanted it all: a child, status, a good reputation, and the emperor's favor.