Revenge of the Sixth Young Lady - Chapter 149

Sa Bina was on her way to write her SAT when she suddenly finds herself in a strange world. She is sent to be the old emperor’s concubine, but on their wedding night, the emperor gets murdered by no one other than his own son and the heir! To survive, Bina makes a deal with beautiful but deadly Lucretius and her life in this dangerous kingdom begins.

25 years ago, Gu Yuan who had a terminal disease was found to possess one kind of kind rare powerful gene.
In order to allow the gene to pass through the generation, she donated out 5 ova before the failure of her surgery.

25 years later, today she awakens. Her 5 ova had now turned into outstandings and famous men.
Mmmm….who is it that laughs at her for being old-fashion, backward, have nothing at all and penniless?

The world-renowned tycoon prince accompanied Gu Yuan for supper. The media was in an uproar, is the prince going to be in love?
Tycoon Prince: That’s my mother.

The media tycoon who controls the world public opinion, stake a thousand pieces of gold on one throw for Gu Yuan. The whole audience was in an uproar, an unknown girl going to marry into the noble family?
Media Tycoon: That’s my mother.

The film emperor with thousands of fans who received worldwide attention broke his 8 years practice and for the 1st time ever unexpectedly composed music for Gu Yuan. The whole internet was in an uproar, is this film emperor’s love of the century?
Film Emperor: That’s my mother.

17 years old beautiful young boy genius with IQ that beyond compares named the asteroid he found after Gu Yuan. The world was in an uproar, is this love between an older woman and a young boy?
Genius Boy: That’s my mother.
……
All the supporting males and females who had ridiculed and bullies Gu Yuan before cried: She actually has how many good sons?!

Finally, when the handsome world most eligible top billionaire accompanying Gu Yuan for shopping, the crowds immediately shout loudly: She must be his mother! His mother! His mother!
The aloof top billionaire: She is the mother of my sons.

- Description from Novelupdates

Time travelling from the majestic era after the Recuperation of Reiki, he became Kimura Kazuki, a 16-year-old high school student in Japan, one year before the Reiki Recuperation.

Tentatively, he set out to hone himself to the bone, burning candles at both ends to stockpile resources in preparation for the imminent Recuperation of Reiki. His goal was to be many steps ahead of all humanity when the time comes.

However, it seemed like fate had decided to play a cruel trick on him.

One year later, the Recuperation of Reiki… did not happen as expected.

Starting as a fallen noble? Struggling with hunger? Having to pay high taxes to the king? If you don’t pay enough, your head will be chopped off?Romon activates the Lord Simulator and begins with a village...[Your subjects discover a large amount of magic crystal ore while digging on the western side of your territory!][Your territory's culture improves, and your rapid-fire mage develops: Orbital Magic!][You successfully expand your territory and discover an underground labyrinth city on the new land!][You annex the land and gain a new title: Duke of Thune!][The king passes away, war breaks out, and you decide: to annex all lords and establish a new kingdom!]Romon: “Annexing the world is for better simulation, leading the world to ascend efficiently—how can you call it personal ambition?”