Reincarnated as a Supernatural Horror Entity - 244 - Missing People Investigation

I fell into a game world out of nowhere with an instant kill skill.
And then somehow, I became a bigshot.

Athena, Earth’s most glamorous lone assassin and the seal bearer of the Death Goddess, met her end on her final mission. She succeeded in eliminating the world’s most powerful Mafia leader with her bare hands, but it came at the ultimate cost, her life.Or so she thought.Instead of the eternal rest she expected, Athena’s soul transmigrated into the body of Athena Demerin, a rising celebrity in the Interstellar Era of the Andromeda Galaxy. As the cherished granddaughter of the Northern Duke on planet Asenus, the original Athena had strived to carve out her own path to stardom without leaning on her family’s immense power. But ambition came with a heavy price. She died from exhaustion… or so the official story claimed. The truth? Someone orchestrated her death.Now, the new Athena has inherited not only this body but its unresolved mysteries. Determined to unravel the secrets behind the original Athena's death and fulfill her dreams, she must also navigate a world of fame, family legacies, and interstellar intrigue.But life throws her another curveball, a marriage to Major General Mors Jericho, the galaxy’s most brilliant young warrior. Revered by millions, he is admired for his strength, intelligence, and commanding presence. Yet beneath the surface of this union lies a web of secrets that could shift the balance of power across the galaxy.As she uncovers the truth behind the forces conspiring against her, Athena must confront her own feelings about Mors.Can a marriage built on duty transform into love? Or will her husband turn out to be her greatest adversary?Will she follow her heart, carve her own destiny, or succumb to the shadows of her past?

…Ring! [ The Unique Skill ‘Grand Devourer’ has been acquired! ]

That’s how it first started.
And then… it didn’t stop:

[ The Unique Skill ‘Evolve’ has been acquired! —
[ The Passive Skill ‘Jelly-like Shapelessness’ has been acquired! —
[ The Passive Skill ‘Resistant Body’ has been acquired! —
[ The Unique Skill ‘Dwell’ has been acquired! —
[ The Unique Skill ‘Skill Copy’ has been acquired! —
[ The Passive Skill ‘Mana Perception’ has been acquired! ]

Up until…

[ The Passive Skill ‘Consciousness’ has been acquired! ]

And then I was through—

Normally, monster-type creatures don’t just pop up in some random place—let alone a human place—out of the blue, and without notice.
Yes, if we’re talking ‘normally’, monsters belong more to places like remote, hostile grounds: they ought to be from dark, nasty forests, old caves, or abandoned, ancient ruins.
As I said, it was only so long as we spoke of the usual deal, however. For better or worse, I wasn’t your regular mob.
So, forget about all the remote, uneasy places humans hardly go to—all the abandoned forests, caves, or dungeons I, a monster, should have been from—and picture a bright, lively family restaurant, in an oh-so-peaceful human village. A restaurant where people ate, chatted, and jested together, all having a good time, blissfully oblivious to the fact that, very soon, I would be cutting them all down.

By magic, a monster-type creature spawned in such a place. It was me.
So far, for the few seconds I had been living, it was quite the good life… I got to listen to a fantastic story being told and shared a cool moment with people.
However! Following an uncertain course of events, I happened to be put up against a wall, with a sword aimed at my chest, before I was mercilessly killed.

I, a unique monster, just spawned in that restaurant, with no clue regarding what was going on.
All I knew was that I wanted to live and survive.
Also, I knew I wasn’t your regular kind of monster.
Thankfully, I’d been granted unique abilities before I showed up.
That is how I managed to survive.

[Simulation shall commence.]On this fateful day, the world was stunned by the appearance of ancient animals that were supposed to have gone extinct for millions of years. Huge sinkholes appeared in every corner of the world, becoming a tunnel for the ancient animals to emerge to the surface.Humans have found an answer to one of the biggest mysteries in human history. Hollow Earth is real. Here, humans will wrest their lives to explore this new world that has existed for thousands, if not millions, of years underneath them.Before the start of his exploration, Clovis came across a place called ‘Another World Mall.’Dwarven Sword, Magical Elven Clothes, or Giant Race Toy? Everything can be found in this ‘Another World Mall.’As an aspiring Subterranean Explorer, how would he utilize this ‘Another World Mall’ to become the greatest explorer of all time and find the truth about the simulation?