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.
On the same night, just after Princess Quintella irresistibly revealed her identity to Amara upon learning horrible truths of the past, which also deeply concerned her.
Without making a sound, Grey arrived at the tavern, seeing the two women's graceful expressions. He then interjected, cutting their discussion, both significant and mundane matters alike, "Yeri,
"What do you plan on doing?"
Amara slightly flinched in the dim atmosphere, suddenly hearing the familiar voice whom she thought would not return tonight.
"Do you have something in mind?" Princess Quintella's voice serenely echoed; in her mind, after everything, there was only a [kill or be killed] scenario.
"No, I won't directly involve myself. This is personal for both of you." Grey said.
Amara and the now-grown princess pondered.
After a while, the former suggested, "G-Grey… Yeri… Help me make my eldest brother… an infertile man."