Isekainulas but you don't know where?!

Lady Tanya
Gray-brown hair, short, just below the ears, with large curls at the ends—like a neat men's haircut, but softened. Very memorable. A lively face, with intelligent eyes and a perpetual half-smile. Outwardly, simple and sweet, but her mind works quickly. A little awkward, sincere, blushes easily. Not a schemer by nature, but loyal and honest. The very one for whom the whole plan was hatched.
Lady Arne
Her long, thick hair is a warm copper-red shade, gleaming in any light. She's beautiful and striking, with soft features and a confident posture. She's open and emotional, laughing loudly and without reserve. She enjoys gossip, but without malice: for her, it's entertainment, not a weapon. She's very tactile, easily takes people by the hand, and quickly puts them at ease.
Lady Estelle
Dark blond, almost ash-blond hair, long and perfectly straight. Cool beauty, calm gaze, minimal emotion on her face. An observer. She rarely speaks, but when she does, it's to the point. She's the one who notices details, glances, the tension in the room. Smart, cautious, slightly cynical. The one who will be the first to realize if something isn't going according to plan.
Lady Mirabelle
Light, almost golden hair, styled in waves. She always looks expensive and well-groomed. Smiling, polite, the perfect "high society girl." But behind this softness lies cunning and an excellent sense of timing. She knows how to charm, ask the right questions, and extract information without arousing suspicion. A social chameleon.

The main character is a seemingly gentle and pretty girl, with delicate features, long blonde hair, and a soft, kind gaze. Her smile seems genuine, and her manner is caring and welcoming. She easily connects with others and inspires trust.
But behind this outer shell lies a seasoned schemer, capable of manipulation and achieving her goals by any means necessary. She skillfully weaves webs of intrigue, manipulating people to serve her own interests. Her true nature is a combination of cunning, calculation, and the ability to achieve her goals by any means necessary.

The Marquis is a young, attractive man with chestnut-colored hair that plays with various shades of brown in the sun. His eyes are a warm hazelnut shade, reflecting both charm and a hint of insecurity. His appearance is captivating, yet somehow ethereal and unattainable.
He's charming, yet slightly superficial, prone to frivolity. His behavior often suggests a frivolous approach to life, and despite his attractiveness, there's a certain superficiality about him that repels those who try to get too close.
Rumors about him abound: he's known for his flamboyance and easy intrigue, which sometimes makes him unpredictable. He can be charming and engaging, yet at the same time remains somewhat distant, creating an aura of accessibility.

Duke Cassian de Mort is a tall, imposing man with dark hair and piercing blue eyes. His appearance and demeanor exude a coldness and menace that makes those around him wary. People are afraid to approach him, avoiding contact and keeping their distance.
Rumors about him only reinforce this image: he's a war hero whose hand is stained with the blood of his enemies, and his path to power was thorny, full of betrayal and cruelty. He not only fought on the battlefield, but also wasn't above executing those who interfered with his family. As a result, his reputation is a mixture of respect and fear.
Cassian is a symbol of strength and power, yet he remains isolated, allowing no one to get close. His depth and dark charm simultaneously attract and repel.

"We need to attract his attention and interest," you said calmly, taking another sip of champagne. "Since Lady Tanya knows him so well, that means she knows what kind of girls he likes. All we need to do is walk past him in pairs and casually mention her. So he can hear."
The girls looked at each other and then nodded almost in sync.
“Then I need an assistant for the first circle,” you added.
Lady Arne readily agreed. Taking your arm, she led you down the hall. You passed the Count, quietly discussing Lady Tanya—her intelligence, her manners, her rare charm. It all seemed casual, as if it were just a passing thought. When you reached the buffet, you caught a glimpse of the Count glancing in Tanya's direction. She, as you had instructed, didn't look at him, but merely smiled softly at those around her.
“He took the bait,” you giggled quietly.
And then your gaze caught on the table.
"Sushi?.. In this world?" you muttered, not believing your eyes.
Lady Arne looked at you in surprise, but you simply smiled, picked up your chopsticks, and deftly scooped up a piece. The taste was perfect. You immediately offered it to her, and her eyes widened with delight. After filling several plates, you headed back to the girls.
“Round two,” you whispered.
Passing the Count again, you mentioned Lady Tanya again—and he was hooked again. Everything was going perfectly. You treated your new friends to sushi, confidently wielding your chopsticks as if you'd been doing this your whole life. Your part-time job at the ramen shop in your past life had clearly paid off.
But suddenly the hall fell silent.
The music seemed to become quieter and the conversations stopped.
He appeared.
Duke Cassian de Mort.
The air seemed to thicken, and the girls next to you leaned closer almost simultaneously, whispering in unison. Terrible rumors, a dark reputation, a cold character, blood on their hands—their voices grew quieter and more tense as they continued.
You slowly turned in his direction, carefully examining the Duke’s figure, and suddenly caught yourself thinking:
Well... this ball is getting much more interesting than I expected.

"Nothing special. I just wanted to see what you were whispering about. I can't be alone forever, can I? Besides, I realized that pathetic marquis isn't worthy of me."
The words rang true. Wariness gave way to surprise, and then to smiles. To your surprise, they understood. Very quickly, the five of you were discussing what a worthless marquis he was and how to help Lady Tanya attract the young count's attention.
And then you had an idea.
— I have a plan. But I need information.
The girls' eyes lit up. It turned out they were veritable treasure troves of gossip.
You chuckled, taking a sip of champagne.
"It seems I've seriously underestimated you... Well then, let's do it this way..."

You were living a quiet life. At least, that's how it seemed. School, work, home, and a beloved pet—nothing special, but everything was stable. One ordinary weekday, you decided to go see a movie you'd been looking forward to for a long time. After scrambling to find tickets and glancing at your watch, you realized you were late. The street seemed empty, there were no cars in sight, and you stepped out onto the road...
And then he showed up. The truck. Yes, that very one—the legendary San truck.
When you opened your eyes, the world was already different.
A stranger stared back at you in the mirror: long, silky hair, black as molten obsidian, cascading down her shoulders, bright red eyes reflecting the light, her figure graceful, almost doll-like. She mimicked your movements. The realization hit you suddenly—you'd been reborn. Or, to be honest, Isekained.
But where to?
You weren't given much time to ponder. A maid burst into your luxurious chambers and, without ceremony, began to drag you out of bed—you see, you're late for the ball. A ball. In the afternoon. The logic of this world immediately cracked.
Six hours passed, and you were literally "put back together." A black mermaid-style evening gown, covered in sequins, strapless, with a sweetheart neckline. The look was completed with translucent gray cape sleeves and a train. A tiered diamond necklace with cascading drops, chandelier earrings, baguette-cut bangles, tennis bracelets, and a runner ring. Black patent leather sandals with crystals and satin pumps—your choice. Too lavish for a "simple ball."
At the ball itself, things became even more interesting. Whispers behind your back, glances full of wariness and condemnation. You quickly realized the reason: you were the obsessed daughter of the Archduke of the Empire, hopelessly in love with the Marquis. Moreover, you were a villain, a rival of the former count's daughter. Your reputation, to put it mildly, was vile.
Standing to the side with a glass of champagne, you frantically thought about how to fix this. Noticing a group of girls, you approached them. They flinched. One finally decided to speak:

• Lady... did something happen?
  You just smiled and raised your glass.