Transmigrated as the Female Lead's Scumbag Alpha Fiancé

[The ending has been completely rewritten] Gu Wen transmigrates into a book, becoming the scummy Alpha fiancé of the rich and beautiful female lead. In the original story, her predecessor was adopted into the female lead's family as a child. But she was an irredeemable scummy Alpha, not only chasing after women but also scheming to seize the female lead's family fortune. When her plot was exposed, the female lead dug out her glands and threw her into the sea to feed the sharks. Newly arrived in this world, Gu Wen trembles with fear. If the female lead says east, she won't go west. All she asks is that the female lead spare her. Later, when the female lead goes into heat, she beckons to Gu Wen with red-rimmed eyes. "Mark me." * After Gu Wen gets together with the female lead, the original male lead comes looking for her and asks her to enter into a marriage alliance with him for their families. Gu Wen is so furious she trembles. Not long afterward, the old emperor happens to spot Gu Wen while passing through South City. The old king, who has no other heirs, bursts into tears. "My child, at last your father has found you." The very next day, a messenger arrives to summon Gu Wen home to inherit the throne. *Both leads are pure, 1v1, happy ending Theme: Be faithful and devoted in love