After my sister Cecilia and I took the royal secret potion to become fertile women, we were sent by our father, the human Emperor, to marry into the Merfolk clan to strengthen ties. In my previous life, I chose the brawny, rough silver-tailed merman Kane. I bore several litters, all giving birth to the highest-ranking black-tailed merbabies. Honored through my children, I became the Crown Princess of the Merfolk, enjoying immense wealth and a lifespan of centuries. My sister Cecilia, who chose the violet-tailed merman Lior, only gave birth to the lowest-ranking red-tailed merbabies. She became a laughingstock among the merfolk. Consumed by jealousy, she dug out my inner core, which allowed me to live underwater and chopped me into pieces, feeding me to piranhas. When I opened my eyes again, I was back at the day of the marriage alliance. Cecilia eagerly chose the silver-tailed merman Kane. But Cecilia didn't know: gaining honor through children wasn't so easily achieved. This silver-tailed merman was inherently perverse and cruel. His methods of torment were exceptionally brutal, and he particularly enjoyed torturing pregnant women. ...... "Serene, I want to marry the silver-tailed prince Kane," Cecilia tugged at my sleeve, pretending to be sweet. "I know you love beauty and will surely choose the violet-tailed prince Lior. But I find Kane quite manly." "Serene, I fell for Kane at first sight. You'll definitely pick the handsome Lior, right?" She giggled, looking at me, a hidden threat in her eyes. Almost instantly, I guessed: Cecilia had also been reborn. Our father, the human Emperor, was on good terms with King Rylan of the Merfolk and specifically arranged this inter-species marriage alliance. Humans and Merfolk struggled to produce offspring. To avoid a lack of heirs, the Emperor had all my sister and me take the royal secret potion. Only Cecilia and I of them successfully transformed into fertile women. In the previous life, Cecilia, accustomed to a life of luxury in the palace, was extremely picky. She fancied the handsome Lior, despised Kane as ugly and brutish, and pressured me into choosing Kane with just a few words. Not long after, I gave birth to the highest-ranking black-tailed merbaby. The last time a black-tailed merfolk was born among their kind was a thousand years ago. I bore several litters, all black-tailed merbabies. King Rylan was overjoyed, crowned Kane as Crown Prince. And I, honored through my children, became the Crown Princess, enjoying immense wealth and luxury. Meanwhile, Cecilia gave birth to red-tailed merbabies, becoming a royal disgrace, mocked by all merfolk. Consumed by jealousy, she took advantage of my weakness after giving birth to my ninth child. She dug out the inner core that allowed me to live underwater, chopped me into pieces, and threw me to the piranhas. Before I could speak, I noticed Kane's sinister gaze fixed on me. This merman despised nothing more than others commenting on his appearance. In the previous life, Cecilia called him ugly and disgusting, deeply offending him. After she bore red-tailed babies, he slashed her face and threw her to the lower-class merfolk for their "enjoyment." Cecilia was deliberately saying this now to provoke Kane's retaliation against me. But she had no idea that becoming Kane's wife was a fate a thousand times more torturous. Kane was sexually depraved. He would constantly demand intimate relations, utterly disregarding whether my body could endure it. Especially during pregnancy, his methods of torment multiplied, often involving other male and female merfolk. Consequently, I bore nine children in three years. He treated me solely as an outlet for his lust and a breeding tool. Since Cecilia desired him so much, why would I interfere? I was overjoyed at the prospect.