Reborn as the Villain in a Romance Fantasy

Note: It features a strong Female Protagonist as the main character. No romance, no harem, no yuri.
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'A self-focused Female Lead, lovesick Male Leads, and expendable extras who will perish. Moreover, this world won't last long due to an ancient threat. So, what should I do now?'

What kind of world was a Female-Oriented Fantasy romance? One filled with rose-tinted glasses and roses? Life should have been easy here, right? Wrong! Layla had read this book before and knew its fate.

"Those inept leads left this world in ruins! I need to take action before it's destroyed. If I'm going to live here, I must ensure this world survives long enough. Who has time for romance when the world is on the brink of destruction?"

Her goal was clear, and her path was set. Layla was determined to use whatever means necessary to secure her second life.

Everyone was a valuable asset from now on, and Layla utilized them effectively to achieve her objectives. This might be a world based on fantasy romance, but she would make sure it didn't meet the same end.