Rei decided to settle the dark elves in the place where the forest met the ocean. Elves loved living in the forest so this was a perfect place for them while it could, later on, turn into a good port city once the population in his world increased.
Rei naturally intended to increase the population in his world. It contained a crazy amount of resources that renewed each day and it would be impossible for Rei to gather it all even if he spend all of his time on it. Rei really couldn't be bothered to do so, which was also one of the main reasons why he wanted to create his own faction. After all, why should he bother gathering the resources when the people he would allow to live in his world could, at least partially, do it for him?
The rest of Rei and Solution's day was spent building dwellings for the dark elves. Rei made use of his Earth Magic to create numerous golems that chopped trees far away from the village and started building wooden houses with the help of the dark elves. Rei was aware that the elves would build something shabby if they were left to their own devices and he wouldn't have it. He was no architect but even he knew that having holes in the roof was not a good thing. Just remembering the houses in the previous elven village made his head hurt.
Elves wouldn't want the trees in their village to be chopped down so the houses had to be built around them, accommodating the surrounding forest. Fortunately, Rei found he had an advantage. He was not sure if it was because of binding the [Gateway to the Lost World: Shiba's Garden] to him as a skill but he had a degree of control over this world.
For example, Rei instinctively knew the chopped-down trees would regrow themselves in a day. That would have been incredibly annoying for anyone trying to clear out a part of the forest in order to build a city. Rei, however, felt he could stop the trees from regrowing themselves, which would then allow him to 'relocate' them.
It was a weird feeling and the usage of the dimension was mostly rooted in Rei's instincts. Rei was sure he was overlooking something extremely important too but no matter how long he thought about it, he just couldn't find out what.
Deciding to forget about these matters, Rei focused on helping the elves to create their new village with his magic, unknowingly boosting their loyalty and gratitude to him even more.
After the proper houses were done, Rei proceeded with making the forest near the village even denser by creating an orchard via the liberal use of nature magic on some seeds he had in his inventory.
This was an experiment for Rei as he wanted to see if he could add a new resource to Shiba's Garden. The planted seeds acted like normal seeds, however, not influenced by Shiba's Garden in any way except for a better growth rate because of the potent nature magic coursing through the world. Rei then used some elementary nature spells to quickly grow these trees, creating a food source for the dark elves.
Rei felt that with some effort he could integrate the orchard into Shiba's Garden if he really wanted but... it was one thing to hand the elves a way to feed themselves and quite another to hand them already prepared food on daily basis. In the end, Rei didn't integrate the orchard and make it into a renewable resource of Shiba's Garden. If the elves wanted to eat, they would simply have to take proper care of it. Rei gave them enough freebies already.
While he was experimenting, Rei also formed a theory about the unexpected existence of massive nature magic coursing through his personal world. He reasoned that much like the interface functions suddenly became spells, the hard-coded resource renewal of the Shiba's Garden also had to be naturally formed by the universal glitch. Naturally, something couldn't be created from nothing as reality was not just a piece of code. The renewal function and resources regrowth mechanics in the real world were based on nature magic, Rei would understand the basic principle of how the renewal of resources was possible.
Not that he had any idea how the freaking thing worked on a deeper level.
'I really need a proper magic researcher...' Rei wryly thought. He was an offensive caster and knew over a few thousand spells but that didn't mean he had any idea how they actually worked.
After he was done with the orchard, Rei cleared a small patch of land on the other side of the village from the trees before turning it into a field by planting crops there and using some nature spells that enhanced growth. These crops won't grow overnight but with thanks to Rei's spells, the elves could possibly have a harvest each month. Fortunately, there were some dark elves who knew how to work fields so Rei didn't have to teach them these things.
Honestly, it wasn't all for the benefit of the elves either. The food they will grow was supposed to feed them but it was agreed that the surplus would still belong to Rei, giving him a steady supply of crops he could pull out of his inventory whenever he had a need for it.
The last thing Rei did before the day ended was something that would give a bit of life to his personal dimension. Shiba's Garden was an empty world. Since its main function was akin to a farming node for Rei, there couldn't be found even one living organism except the dark elves.
Rei, as the true exploiter who had years to think up a solution, naturally came up with an answer long ago. The answer was simple. The pop monsters.
Yggdrasil didn't only have scary pop monsters. There were several convenience items such as [Pond Pearl] that was once upon a time 'reward' in Gacha. [Pond Pearl] was a summoning item like [Horn of Goblin General] that could summon twenty fishes ranging from level 1 to 5. The number of spawned fishes would be kept at twenty and if one of them was killed, the pearl would spawn an additional one to replace it. This item was supposed to be used by players who enjoyed making ponds in their personal houses, guild bases, or whenever. Frankly, it was just a useless item to fill the last spot of Gacha reward in Yggdrasil.
As it was the worst thing that could drop from Gacha, it dropped quite often and Rei had millions of them in his inventory because of how often he rolled Gacha. In Yggdrasil, fish monsters from level 1 to 5 were useless. In the real world... Rei used [Fly] to fly above the sea and dumped a few millions of the [Pond Pearl]s into it that instantly started spawning fishes, filling the ocean of the usually empty world with life.
Since the spawners for these fishes were relatively close to the new dark elven village, the waters near it would be always full of fish, giving the elves yet another possible source of food.
Fishes were not the end of it either. Rei had some spawners for elks, deers, boars, rabbits, and other various low-level monsters that could fill the forests with life. These he hid deep underground before placing one of the renewable trees above each of them so nobody could just dig the spawner out by a chance. This way Rei created zones where animal-type monsters spawned in the forest around the village, giving the dark elves an opportunity to hunt for meat or maybe even try domesticating some of these animals.
'Now then,' Rei thought with a grin as he watched the pop monsters do something they would never try in the game. Namely, leave the influence zone of their spawner. That instantly reminded Rei of his need for the magic researcher who could explain to him how the friggin' spawners worked and what fueled them. 'This is no longer a game so there must be some kind of mechanics behind it.' Rei briefly pondered before deciding it was not important for now.
Looking at the rabbits that just spawned, Rei's mood improved, 'Hehehe, go my animals and breed! Breed and fill this world with meat for my followers! Be butchered and fill my inventory with meat products! Haha, slave away your pathetic spawned lives for the Greater Good!' He darkly chuckled like a shady third-rate villain before stopping in his tracks as he glanced at the unsuspecting dark elves trying to catch themselves a level 2 rabbit monster, 'Hmm... should I try to create a dungeon?'