I have an Apocalypse City - Chapter 22 - : Is the Supermarket This Realistic Too?

I became a professor in a game by accident. To make matters worse, I even messed up the difficulty settings. Now, I’m stuck playing on Hell Mode. A world on the brink of war with the Demon King. An Assassin Department where mu*der is legal… as long as you aren’t caught. I thought I’d have to claw my way through just to survive in this wretched place, and that was the case at first. But nowadays… “No matter how hard I try, I can’t be like you, Professor… How do you do it?” “Please… become our god.” “What do you know? What is it you know? Why do you make me want to live…?” One by one, everyone at the academy began to obsess over me.

What was originally an ordinary day, suddenly became a historical turning point. Enormous, mysterious Cubes appeared all over the world without warning and as if Judgement Day’s spears, inserted themselves into the blue planet.

From inside the enormous Cubes, endless streams of monsters gushed out alike raging tides, utterly defeating the unguarded armies of each state in the blink of an eye.

In order for humanity to preserve its final embers, the heads of states issued orders of retreat, to no longer attack the Cubes but rather to cling to remote cities, which they turned into self-sufficient survivor bases and around which they built 100-meter-tall Walls of Life!

Many years later, while bearing the heavy weight of history, the first expeditionary force brought back a world changing piece of information. The Cubes possessed exceedingly high intelligence and they regularly transmitted mission instructions to humans nearby. The mission rewards were incredible.

Since then, humans rushed out of the confines of the walls and once more set foot on the wasteland!

- Description from Novelupdates

Synopsis below:How did the Avatar universe change when a transmigrant appeared in an unknown village, long before the canonical events? And how are the two islands Kyoshi Island and Uzushiogakure no Sato (A village hidden in the maelstrom)?---Tags: AU, Before-canon, Post-canon, Violence, Death of major characters, Transmigration, Harem, Children, Incest, Romantic. Foul language.

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