Female lead's Delusion of Starting Over - Chapter 30 - Tropes Not Even Trashy Movies Would Use

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?”

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

Someone once saw me at the end of the world and respectfully called me the serpent that coils around the world—Jörmungandr.Someone once gazed upon my form at the edge of the Underworld and called me an ancient serpent—Satan.I was also feared by the gods and was called the hundred-headed dragon—Typhon.I have had many names—the serpent of creation, the serpent of sacrifice, the serpent of ceremony, the serpent of the world...But I have wandered through the chaos and arrived at the wilderness. There is only one divine name—the Primordial Ancient Serpent, the origin of everything.

Ye Hai traveled to the Marvel Universe, with a large scientist system, and IQ completely exploded all Marvel superheroes and rebels.

     “What is Iron Man? His steel suit is all my cottage! Tony, I seriously warn you that you have to pay me patent tax!”

     “The Hulk’s stuff is harassing me again, isn’t it just turning your ass red? But I have solved your problem of getting out of control, and a little sequelae should be.

     “Captain America, don’t always show off your shield, your shield is not unusual, I can mass-produce it!”

- Description from b faloo