I Became the Younger Brother of the Obsessive Yandere Heroine

“A Soul Contract Has Been Formed.”

Monaka Amamiya was out for her usual jog, listening to an audiobook, when a sudden message flashed across her phone screen.

The next thing she knew, she had woken up as Luna Demville—the protagonist of the tragic novel she had been listening to, a story that ended in complete annihilation.

To make matters worse, she found herself in bed with her fiancé, the merciless and obsessive yandere emperor, Louis!

With a power-hungry cousin vying for the throne, a vampire out for revenge on behalf of his sister, and a seemingly obedient wolf-boy hiding a painful past, Luna was surrounded by danger at every turn.

Her only chance at survival? Lower the yandere tendencies of these four dangerous men and change the course of the story.

Can Luna break their obsessive natures and escape her doomed fate?