The Guide is Actually a Body-Switching Esper [BL] - Chapter 271: Diana’s Condition

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

After getting banned from her own world at an young age for a greater purpose, Esme Watts was living happily in the human world.

Disguising as a human girl, she was getting immense love from her human parents.

Slowly, she was forgetting her own identity and was living her life well with some beautiful and loving people around her.One day her joyful world turned upside down when she was suddenly kidnapped.

After getting kidnapped by the ruthless vampire king Aaron Richards, Esme Watts was forcefully locked up in a dark room waiting to be rescued by her dear ones.

Even every breath she took was too painful for her numb body..As days passed, she kept searching a way to escape from this terrific vampire world.

But after knowing Aaron personally and closely, will she try to escape or will she be trapped by his possessive love?

Will Aaron love her after knowing her true identity??

Why did Aaron want her desperately? All is in the name of love or something else!

A mysterious teenager who had lost his past, awakened in Tianlong Continent. Mistaken as the Ye family’s Son, he used this identity to observe this chaotic world and to search for his past self, but only to find an inevitable and terrible fate, therefore he indignantly laughed at his destiny, and revealed his prowess to rule the lands under the heavens.

Since then, the air and the clouds moved with his hands, and even thunderstorms were subject to his palms! He, as the fairytale’s main character, had shocked the people of Tianlong Continent with his legendary prowess and intelligence, but the extent of his powers were still unknown.

- Description from novelupdates

Zavier met Cosmic Consciousness after his death. He was satisfied with every system that Cosmic Consciousness exhibited, so he wanted all of them. Surprisingly, the Cosmic Consciousness obliged him.

Zavier was reborn in an isekai full of magic and alchemy. Now, he had many routes to upgrade. Interestingly, to coordinate these systems, Cosmic Consciousness gave him the gift of being able to duplicate himself. He could clone a finite number of himself to manipulate these systems.

Magus, Alchemist, Mesmer, Tamer, Hunter, Vampire, Werewolf, Dragonknight, Necromancer.....

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By the way, it wouldn't appear NTR or some bullshit harem of courtships. MC of course will have harem but not for cliches.