Isekai'd as a side character

Evelyn reincarnated into her favorite novel. Unfortunately, she is an extra who has enormous divine powers but is only taken advantage of and dies a miserable death.
In order to survive, she must pretend to be Cordelia, the goddess and heroine of the prophecy. All Evelyn wants is freedom, not romance. Everything went smoothly until it was discovered that Evelyn wasn’t the heroine.
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○ : child abuse; animal abuse; kidnapping
○ Pages are missing, according to comments

I possessed of the Empress in the novel of Rofan. The problem is that the Empress is a supporting character who will be pushed off the throne by the cunning Emperor, then eventually dies of illness. I don’t want to die cold and alone, waiting for my love to come true, like the original empress. So I'll be the villain and get a divorce.
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I reincarnated into my own, incomplete novel before I wrote about the beauty’s appearance. All I know about the “Beauty” is that she has black hair and crimson eyes, but after witnessing Prince Reynsis’ unfortunate childhood firsthand, I resolved to go and find the Beast’s Beauty myself.
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Lilian McEllion, the girl who wanted to avoid a bad end, willingly went to the insomniac emperor in place of her sister, Leilan.
She is tasked to help the sleepless emperor, who was cursed by a witch, by using her ability to induce sleep whenever she touches another person's body with her lips.
Can Lilian survive being with the emperor?
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○ : suicide

After dying in an accident, I was reincarnated in an otome game… as a crow. Not an extra, but a crow! When I was looking for a person around me, the first who appeared was the Crown Prince.
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Ham Dan, whose hobby was reading “Law of Insomnia” wakes up to a beautiful novel-like heroine. But even in the world of fantasy novels, her role is no different. Stuck as the childhood friend, her normal everyday life comes to an end.
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○ I’m including this despite her not transmigrating into an existing story because it’s in a story-like world