Devil Slave (Satan system) - Chapter 1212: The Holy Tool Of...

July, 1946. The existence of an alternate world was confirmed.

It was supposed to be a new world for mankind.

However, the enormous cost, the annihilation of the advance troops, and fierce public opposition led to the signing of a non-aggression treaty.

Mankind turned their eyes towards space.

Half a century later.

A certain company formed a team in order to explore the alternate world’s dungeon.

Five professionals and three artificial intelligences. And one reserve member.

With modern weapons and technology, the adventure was expected to be easy.

However, the ones who had arrived in the alternate world were a defective artificial intelligence and a non-professional.

Through trial and error, they lived, ate, and fought. And, they explored the dungeon.

Lucien, a guy who has nothing but the desire to save his mother. To get strong enough, he makes a contract with the demon of L.u.s.t. And now, only by making a great harem, will he gain the power to protect those dear to him.

After centuries of ruling the underworld with terrifying power, Lilith dies in an epic battle, only to be reborn in the human world. But instead of a grand rebirth as a queen of darkness, she's reincarnated as something far more mundane—a secretary. Rather than despair, Lilith finds this new life amusing. After all, who would suspect the devil herself to be working a 9-to-5?Settling into her new reality, Lilith embraces her role, living in a luxurious apartment and working diligently in her office. Though her devilish instincts are hard to suppress, she's determined to be the perfect secretary. But when people push her too far, the devil within still comes out to play.When a creep in the office dares to look at her the wrong way, she calmly fixes her gaze on him. “You keep staring like that, and I'll show you what a broken wrist feels like.” The man quickly scurries away, leaving Lilith with a satisfied smirk.Even the rich, entitled girl from accounting isn't safe from her wrath. “You think you can push me around just because you've got money? I've burned entire kingdoms for less. Don't test me.” She says this with a calm smile, her eyes glinting dangerously.The day continued like that—stopping creeps in their tracks, putting rude heiresses in their place, and being the flawless secretary she intended to be. But, of course, her boss—the CEO—had his eyes on her, more curious than ever. And while the entire office might fear her or wonder about her, she remained blissfully indifferent. This was fun. And she wasn't here to impress anyone but herself.Who knew being a secretary could be so... interesting?

Traveling to the wizarding world, Eli found that he was an Eternal.

Life is infinite, life is immortal.

“What? The talent is very poor, then I will meditate for ten years, centuries, and thousands of years, and I can always meet the promotion requirements.”

“This skill is hard? Oh, let me study it for decades to see if it’s really that hard?”

“Consuming life force, improving mental force, and this kind of good thing.”

“The enemy is here? Oh, let me find a place to hide for a thousand years, until his lifespan is exhausted and his mental power dissipates, and then I will come out again, free and endless void.”

…

This is the story of an immortal who lives in the wizarding world and then kills the endless world.

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