I Am the Wicked Female Lead's Cannon Fodder Daughter

Only after falling into the abyss did Xiangli Huaiyun learn that she was a character in a tragic romance novel. She was the daughter of the male lead and a supporting female character, a disposable extra. - The heroine, Lian'er, was a delicate, gentle peach blossom spirit. The male lead was Xiangli Jue, a fallen prince of the Celestial Clan. The male lead had no choice but to marry the powerful supporting female character. Heartbroken, the heroine ran away with his child. After the wedding, the wicked supporting female character gave birth to Xiangli Huaiyun and repeatedly sent people to kill the heroine and her son. - Huaiyun had an extraordinary immortal physique, but unfortunately, her spiritual bones had been defective since birth. Her qi meridians were blocked, making it difficult for her to increase her cultivation. The male lead doted on his useless daughter and wouldn't let her suffer even the slightest hardship in cultivation. - With support from the supporting female character's maternal clan, the male lead reclaimed the throne. He made the supporting female character the Heavenly Empress and, despite his subordinates' objections, named Xiangli Huaiyun Crown Princess, even though her cultivation aptitude was abysmal. Several years later, demonic seeds ran rampant. After the great battle, nearly all the members of the supporting female character's clan had perished. Huaiyun's mother, aunt, and cousin tragically died in battle. Xiangli Huaiyun sacrificed herself willingly, jumping into the abyss in front of her father and sealing the demonic seeds with her soul and immortal body. The novel's ending was full of sweet romance: After his wife and daughter died, the male lead welcomed back his true love, made Lian'er the Heavenly Empress, and named their son Crown Prince. The new Crown Prince was elegant and handsome, exceptionally gifted, and possessed supreme spiritual bones. Everyone lamented that the Crown Prince was far better than the useless Crown Princess who had died. Beneath the abyss, Xiangli Huaiyun opened her eyes. The novel's plot wasn't entirely accurate. First, she hadn't been born with defective spiritual bones. Second, her mother and cousins hadn't died at the hands of the demonic seeds. Third, she hadn't fallen into the abyss of her own free will Her father, who had always doted on her, had tried to kill her. Fortunately, before her father killed her, she had already made a pact with a world-destroying demonic seed. - Note: There is a male lead and a romance plot. The male lead is a demonic seed. Theme: Love specific people, not grand abstractions.