Isekai’d as a side character

I’ve transmigrated into a novel where the emperor, the second male lead, goes mad with rage after losing the female lead. I’ve become an extra, a princess of a country destined to be destroyed in chaos. To survive and protect my beloved father and people, I planned to have an heir to inherit the powers of the merfolk, but the man I spent the night with turned out to be that crazy emperor.
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She found herself in the body of an extra in the original story, but her father hit her on the head with a bottle and she was unconscious for three days. When she woke up again as Seraphine, she decided the first thing to do was to kick out that b*stard father of hers. “I found The Land Abandoned by God!” And so, she naturally started meddling with the original plot.
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• TW: physical abuse

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I not only reincarnated into someone who died in an absurd fashion, but I also took the crown prince's place and went to the secret neutral territory, where male members of the five imperial families gathered. As a result, my childhood friends know me as a boy.
After many years, they returned as heroes who defeated the wild dragon, come to visit me. Of course, they didn't recognize me at all. The problem is that my childhood friends are trying to kill me.

Cursed into an 18+ Omegaverse BL novel as a beta woman (no alpha, omega, top, or bottom here!), I’ve somehow become the Crown Prince’s “personal attendant”—a title that perfectly reflects my miserable situation.
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• TW: child abuse

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