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.
According to the Extraterrestrial System, a list of suited [Alien Skills] exists for an Anon Scientist.
Grey could not forget the seemingly trivial moment when he utilized the [Knowledge Assimilation] to instantly and superficially learn the peculiarly [Japanese-sounding] skills, which were the [1] Anonasha Sword Arts, [2] Inugirana Blade Arts, [3] Dorumiya Scythe Arts, [4] Jijisooana Sickle Arts, [5] Nananahari Flower Arts, [6] Gengrena Alchemical Arts, and… [Aruminasa Spell Arts].
Hearing the exact word that corresponds to a spell activation, a sense of bewilderment in this crucial situation was undeniably painted in Grey's countenance.
'First, it was Moly, inheriting the legacy of the so-called Blood Sun God, which seems to have a relation with Aruminasa… and now, this!'
However, Grey had no time to ponder longer as the ancient tomb containing a purple rift was enveloped with blood-red mist… similar to the nature of the Blood Sun God's spells!