Married to My Ex-Fiancé's Cousin - Chapter 366: Chance Encounter at the Restaurant (2)_1

Magic. It is a product of neither legends nor fairy tales, but instead has become a technology of reality since a time unknown to people. Supernatural power became a technology systematized through magic, while magic became a technical skill. A “Supernatural Power User” became a “Magic Technician”. Magic Technicians (in short, Magicians) are nurtured through Magic High Schools and Universities. This is a story about: A defective elder brother and low achiever. A perfect, flawless younger sister and high achiever. After both siblings entered a Magic High School, The stage of daily turbulence was unveiled —.

A protagonist reborn in another world.

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

The empire has turned into the land of the undead due to a spell gone wrong. God summoned heroes from countless worlds to purify the empire and plant new hope. Lee Shin Woo, an ordinary earthling, was also summoned. As an undead, that is.