After Entering the Book, I Became the Female Lead's Stepmother

'''Completed Works: "Being a Scumbag in Dogblood Stories [Quick Transmigration]", "Countering the Dragon Proud Heaven in a Harem Story [Quick Transmigration]", "After Scamming Four Strong Alphas, I Differentiated into an Omega+", "The Charmer [Quick Transmigration]" Xu Chun transmigrated into a yuri novel. The female lead is her fiancée, the second female lead is her ex-girlfriend, the supporting female character is her devoted fan, and there's even an antagonist who's an insignificant backup in her harem. None of this would be a problem. But here's the catch— She's supposed to be the female lead of a romance novel!'''