On one fateful day, when everyone went on with their mundane lives, the Earth was found in the Dark Forest known as the universe, resulting in unknown extraterrestrial beings preying on the weak — the humanity. Grey, an intern, was then killed due to an alien invasion, only to find himself reincarnated in the mysterious world known as Magica. But wait... "I've become an alien?!" Integrated with a mysterious entity known as the Extraterrestrial System, follow Grey's journey as he begins to seek the mysteries of the world while gradually, slowly, but surely building his Alien Empire despite being surrounded by powerful existences such as Heroes, Demon Lords, and other magically powerful beings.
The sight was similar to a bazaar in that there were unusual monsters in the mix of seemingly mundane transactions.
That being said, with proper arrangement, the trading between the elves, dwarves, and the monsters under Grey's rule was proceeding smoothly.
At first, they were reluctant, thinking that they would be killed. But knowing the value of the items they brought in this, the elves and dwarves even began feeling that they were scamming the monsters due to the items they received in exchange.
"T-This is… a fine hammer!"
"Is this real?! It'll help in protecting the village against the threat of some lurking beasts!"
"This will be of great help with the plantation in our village."
Items considered to be a necessity for society to function properly were traded for nothing but silk, seeds, metals, and stones.