I Became a Dark Fantasy Villain - Chapter 157

A high school student that has lived as a mob-character ―― Mimori Touka

This is an absurd story of an empress who has traveled to modern times and still insists on rebuilding the Sannomiya Sixth Court without changing her nature.
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Su Junli was very depressed. She inherited a pair of red and green monster eyes, but she is a majestic queen, how could time and space change overnight, and the world was turned upside down, and the beautiful girl in front of her who claimed to be her “Mi Potato” The man called her to “grow vegetables”… You are the only one who grows vegetables, and your whole family grows vegetables. I am the queen!
Anyway, I can’t go back, but the thousands of subjects under the queen’s seat and the thousands of employees under the president’s command are actually the same in management. Since the original “Jun Li” is too useless, let her take over all of them , money, power, status, and of course, those high-quality men who make his heart beat…
An elegant and intellectual personal secretary, a sinister and cunning special assistant, a wild and domineering mafia king, a pure and natural childhood sweetheart, a ruthless No.
The Su family who killed without blood,
In the underworld filled with blood and gunpowder,
Talking and laughing about the ups and downs of the business empire,
Even if every step is frightening, one day, she will stand on top of the world!

- Description from novelbuddy

This legend tells the tale of the protagonist, Kuroki summoned to protect the demon king from the hero.

Kuroki, unbeknownst to him, suddenly came to another world. He was summoned by the demon king, Modes. The territory which the demon king overrules was in the midst of being destroyed because of the hero. He had no choice but to bow before Kuroki.

“Please save us, Savior Dono!”

Kuroki nodded, deciding to save the demon king due to an unexpected turn of event.

Jiang Tong was a person who had no tomorrow. She was stuck in an endless loop, repeating the same day, 4th April of the year 2022. From the initial excitement up until despair, Jiang Tong had tried everything to escape. She killed herself countless times, using different methods, but she would always wake up on the day of 4th April 2022. To pass her unlimited time, she learned more than a thousand and three hundred skills. From languages, to shooting skills, culinary skills, performing arts, etc. Jiang Tong learned everything imaginable. She enjoyed the excitement and hotblooded fights brought about by wrestling; she enjoyed the speed and thrill brought about by car racing; the pleasure of seducing and tasting all kinds of handsome men; the therapeutic sensations of playing various instruments.

No matter how much trouble she got into, when it got to four in the morning, she would suddenly fall asleep and wake up on the morning of 4th April. Until… After countless trials and errors, she finally managed to bed Z City’s most dignified but also the weakest young master, Ji Lanzhou. Ji Lanzhou was the Ji family’s youngest young master. Due to his frail body, he was the apple of the Ji family’s eye. No one in Z City dared to mess with him. But Jiang Tong didn’t care because she would have to relive this day again tomorrow. Yet… When dawn came, Jiang Tong was shocked to find Ji Lanzhou sleeping on her bed when she opened her eyes. The man even looked pale from having overexerted himself. Jiang Tong was delighted! She looked at her phone, and the date showed 5th April, 2022! After five hundred years, more than a hundred and eighty days, she was finally out of the loop! Ji Lanzhou woke up to see Jiang Tong laughing and crying like a mad woman. He pursed his pale lips and said, “Liar.” Jiang Tong raised an eyebrow. “It was an accident, Sweetie. So now I have to run for my life.” Ji Lanzhou was baffled.