Lewis always liked having fun and disliked trying hard to advance.

The reason he reached rank 10 was Dyer.

Dyer always advanced first and took him up with him.

It's a debt that can never be paid off.

Lewis doesn't feel that indebted; he never asked Dyer to do it.

The world he would create would have no mages; nobody could meditate, cultivate, etc. Everyone remains mortal.

He sighed and started.

Lewis knows coding from his time in Anti-Rachel. In the last billion years, he didn't just remain motionless.

He left for adventure and eventually joined Anti-Rachel as a contractor. He worked for them for a long time and bought a rank 11 magical talent pill. That's why he was able to reach rank 11.

Before, Dyer would have given him the pill, but now, he has to do everything himself. He has no complaints.

Lewis left Dyer genuinely for Dyer's own good; helping Lewis forever would hinder his progress.

Maybe one day, they get back together when Dyer reaches rank 12.

But that is the future; now, he is busy making his world.

He used his contribution points to learn coding and other advanced skills during his time with Anti-Rachel.

He is not an expert but can create a simple world with a few complete laws. He can at least do the basics.

Anything complicated may be buggy, but he will fix it over time.

He took out three complete laws.

The three laws are:

* The complete law of time.

* The complete law of space.

* The complete law of flexibility.

Time and space are the basics; worlds can operate without them, but it's best if there is at least one of each.

Bigger rank 11 worlds have many time and space complete laws.

The complete law of flexibility is also very useful; it would significantly increase maneuvering range.

Even if Lewis is not great at coding, with the complete law of flexibility, he has room for error.

He threw the space complete law, and as it expanded, he started coding.

Lewis has no coding device and can only do it without assistance.

He closed his eyes. At this level, he doesn't need his eyes to see. But even at this level, eyes being open might affect concentration.

With closed eyes, he manipulated energy and started placing them into specific shapes. At every moment, he wrote books worth of content.

The amount he wrote in a second, a mortal couldn't write in a thousand years.

Before starting, he took a few pills; otherwise, even a rank 10 might not have been able to do it at this intensity.

Lewis isn't very skilled, so his coding went on and on. The more skilled the coder, the shorter the coding will be.

A supreme grandmaster of formations can make a rank 10 world with just one line of code.

As for a supreme grandmaster of coding, they can code even a rank 11 with one line.

Lewis is not even a master; he just has some training.

After a while, he finally finished.

He coded this world using realization energy.

Usually, rank 11 worlds are coded using complete laws, but Lewis felt more comfortable using realization energy because he learned realization coding at Anti-Rachel.

Also, realization energy coding is much more suitable for his fun world.

He then threw the time complete law and started.

After a relatively long time and a lot of coding, he finished.

Next, he threw the flexibility complete law and coded it as well.

Despite his training, he still made many mistakes in coding time and space laws. But, adding and coding flexibility eased many of those tension points. It made everything smoother.

"It's done!" Lewis sighed with relief.

He thought he would fail this time. It wasn't easy.

He is neither a formation master nor a coding master; without any masteries, it was more likely than not to fail.

What is coding? Ultimately, it's energy placed in a specific formation to operate in a particular way.

Masters, grandmasters, etc., have intuition; they don't need to think when they code. Their masteries guide them.

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On the other hand, those who lack masteries must think every step of the way to make sure nothing goes wrong, and nothing is contradictory, etc.

Fortunately for Lewis, most of this world's code was from Anti-Rachel, and he had experience working with it.

Also, he helped code a few worlds when he was a contractor and was doing tasks for Anti-Rachel.

He modified this world's code a bit, but most were from a tested coding model from Anti-Rachel.

He went into the world and looked around.

As one would expect, it was a vast land with nothing on it.

"Time to fill it up!" Lewis thought.

He took out Alive's token and connected to the portal. He had already chosen all he wanted to buy.

Fortunately, he had a module from his time on Anti-Rachel. Still, that module wasn't a complete fit for this world, so he made several modifications.

Those modifications will almost certainly cause a disruption, but that's for later.

He quickly bought all he wanted and then closed the portal. After all, staying connected for a long time is very expensive. Strangely, Alive designed the token this way, and even just looking at the list while connected to the portal will cost a lot.

The token flew up, shone with a very bright green light, and spread everything as instructed.

Lewis looked and nodded.

He bought three species: elves, humans, and divine species.

Elves and divine species were without culture, and humans were of modern and medieval cultures. All had a peaceful add-on.

Cultureless mortals are wild cards. They can think completely freely and advance their technology.

Most wouldn't buy them, but Lewis did because he thought having them would be more fun.

The system he set up is quite interesting.

First, there is no way to advance; everyone will remain mortals.

Second, nobody owns a body.

What does it mean? It means people can change their bodies.

As for the way to do it …

Lewis did it in a fun way.

The two people who want to do it must have sex!

Lewis thinks it's fun this way. As Lewis put it, transferring bodies is only possible after the age of 18. As for why 18, who knows; he just thought of a number and decided.

The sexual activities also must be consensual, so it's not possible to steal bodies with force.

And, in any way, the peaceful add-on would make everyone law-abiding.

Lewis hates bloodshed and fighting.

One can change one's body at most once a year.

Lewis added an extra incentive.

Every time two people exchange bodies, the bodies get one year and one day younger, though one cannot get younger than 18.

If one wants to survive, they must change bodies; otherwise, they will die of old age.

With this setting, everything would be so interesting!

...

Sean is pregnant.

He was born a man and married a woman.

But when he and his wife Caroline engaged in sexual activities for the first time, their bodies changed.

Both were surprised to the extreme.

After a few hours, they called a doctor.

The doctor came and left with dissatisfaction without fixing them; he thought they were insane or were pranking him.

But as time passed, it happened to more and more people.

Soon, it becomes common knowledge that bodies change during sexual activities for some reason.

Sean and Caroline tried to do it again to change their bodies back, but failed.

After a few months, Sean realized his body was pregnant.

He cursed himself for that night.

In the end, they decided to keep it. So, he just ended up bearing the child.

He never imagined that he would one day be pregnant.

...

Situations like that happened everywhere.

That made sex scary for most. As a result, in the coming years, fertility dropped to extremely low levels.

However, as time went on, people started getting used to it.

They found a solution.

Basically, a man will engage in activities with another man, and after that, they will be safe for one year.

Mostly, close friends who trust each other do this. Both sides entrust each other's bodies to each other, and they do it again at the end of the year.

There is no other way; different genders are uncomfortable in opposite-gender bodies; this method solved the problem, and after a few decades, it became routine, and nobody felt strange about it.

This situation was precisely what Lewis wanted.

He watched it and laughed and laughed. It felt funny to him.

The situation encouraged same-sex relationships. Therefore, coming out as homosexual became very easy and acceptable. It was another thing Lewis loved.

No matter where, being different from the majority is difficult, as moving in the opposite direction of a river's flow is difficult.

Only daring people can challenge the mainstream.

But here, it was mainstream to have intimate relations with the same sex.

Everybody did it, so nearly nobody judged those who chose to live with the same sex badly.

Not even the medieval humans, who are more traditional!

Lewis disguised himself and moved to a modern city.

...

Mike was born a straight man.

So, he was supremely disturbed when he had his first time with a girl.

He suffered in a body he was uncomfortable with for a year. After that experience, he was so traumatized that he became unable to have any more relationships.

It was then that he found Lewis.

Lewis was kind, so he suggested a way to solve the problem. Mike heard it and reluctantly nodded.

He changed bodies with another one of Lewis's customers. One benefit of these shops was that everyone was background checked.

He thanked Lewis, paid some money, and left.

After avoiding relations for many years, Mike was very excited about his next date with a woman.

Mike was satisfied with how the other man kept his body at one year's end.

He went in and changed with the same person again, regaining his original body. He decided to do it here at Lew's each year to recharge.

...

Lewis set up a body-swapping shop where men come to charge their one-year permission.

Many other such places also popped up.

It's a rational ending point; people use everything to earn money.

There are places like this for women, too, but Lewis's place is only for men.

People go into these shops and exchange bodies to have normal relationships for a year.

Lewis made clones to go to many cities and spread this kind of shop.

In modern human cities, work and technological progress were going smoothly.

In medieval cities, kings and nobles bought good bodies from muscular men and always remained fit.

These were only a tiny part of life, but Lewis believes these were the fun parts.

Then, he put his next big idea to the test.

After modifying the code a little, he smiled and started laughing. "Let's see what happens next," he thought playfully.

...

Soon, another transformation shocked everyone.

On one typical day, everything got blurry, and everyone fell asleep. When they woke up, they found another of themselves looking at them.

That's right; Lewis made clones of everyone!

Both had the same memories, and there was no way to establish who was real.

The next developments were as Lewis wanted.

Before, many straight men and women had sex with the same sex only because they didn't want their bodies to get swapped to the opposite sex.

Now, with another of themselves, they just had sex with themselves every year. Or, they thought, every year.

They soon realized the time had been reduced from one year to a day.

Everybody swap would make one younger by 25 hours, with the lower limit remaining 18.

Therefore, to protect against body swap and to remain young, everyone must have sex every day with their clone!

Lewis, who by most standards was a pervert, was laughing hard at all of this.

His main body, though, was not laughing.

He discovered a few bugs a while ago and now is busy fixing them.

Those bugs were not that big, and because of the realization coding and Flixblity complete laws, they didn't affect anything.

Some mass extinctions also happened due to bad placement of living beings.

Lewis will remain busy for a while at this point.

Only his clones can have fun.