After Becoming a Succubus, I Bewitched My Archenemy

The imperial family's struggle for the throne has always been brutally bloody. After the princes have slaughtered one another, fewer than one in ten of the royal bloodline has ever survived.

Princess Fiona, the sixth princess of the current dynasty, is a brainless beauty with no dreams beyond eating, drinking, and lying flat. She has no sense of the war that has already begun around her.

Her greatest efforts each day go toward forming her own fan club and getting into childish spats with the noble young men at the academy who think she's nothing but a pretty face.

But after seeing the cruelty of the succession war with her own eyes, Fiona thinks long and hard. To avoid becoming cannon fodder among her siblings, whose eyes have gone red with bloodlust, she decides to use magic crystals to awaken an ability and gain a trump card that will keep her alive.

But...

...Huh? Why did the magic crystals turn her into a half-succubus?

*

After becoming a half-succubus, Fiona has a flash of inspiration and decides to use her natural gifts to improve her odds of survival!

She rolls up her sleeves and uses her power on the high-and-mighty young nobles at the academy, who openly support her royal brothers and always call her stupid. She stands before them and orders them to serve her.

The boys give her a strange look for a moment. Then the duke's son pulls her into his arms while the sons of counts and marquises massage her back and legs. With handsome men on both sides, she's in absolute bliss.

Fiona: "This is great! Woohoo!"

Having gotten a taste of the good life, Fiona pushes on. She charms the trusted knight commanders of her royal siblings, the leaders of their mercenary groups, and even the dragons and demons they have contracted as familiars. Her mortal enemies who used to look down on her all become her minions!

With their help, Fiona successfully survives the succession war.

But when the war ends, Fiona suppresses her ability and prepares to leave the capital...

Suddenly, everything goes black. When she wakes, her hands and feet are bound, and her mortal enemies stand in a line before her, their faces dark.

...Once the charm wore off, they should have forgotten what they did. So why have they come to capture her?!

Fiona only learns later that her little talent was useless against these dragon-blooded elites, who have exceptionally high magic resistance.

When they realized she was running away, they decided their game with her was over.

Fiona, surrounded by her mortal enemies: ...Help!

Theme: Do whatever it takes to survive