Life Simulation: I Caused the Female Sword Immortal to Regret Forever

Since ancient times, humanity has held a deep curiosity about the countless stars scattered across the night sky—those distant, unreachable lights twinkling in the vast cosmos. Whether through poetry or symbolism, people have always adorned the stars with the most beautiful descriptions their imagination could conceive.

Starlight cascades down, shimmering in the wind…

On countless tranquil nights, people have gazed up, dreaming of the brilliance beyond their reach.

Yet, it was only when humanity’s technology reached the stars that they realized the beauty they envisioned was nothing more than a figment of their imagination.

The true universe is filled with desolation and emptiness—cold, dark, and indifferent.

Now, Xu Xi stood facing this reality, witnessing the vast, merciless void firsthand.

[Simulation Year 16: You are now 35 years old, and Ailei has been with you for 14 years.]

[Since the end of the intelligent machinery war, you have been diligently researching starship technology and harvesting planetary resources. Finally, you have built a grand fleet of starships.]

[Your fleet blots out the sky.]

[With main battleships, escort ships, reconnaissance ships, logistics ships, and ecological living ships, your preparations for interstellar travel are thorough.]

[To ensure a comfortable journey, you designed an ecological ship, complete with automated green environments and a warm, habitable space to alleviate the loneliness of deep space travel.]

Standing on the deck of the ecological starship, Xu Xi gazed down at the planet where he had spent the last decade and more.

“Ailei, let’s depart,” he commanded.

“Yes, Master.”

The sky was clear and boundless.

The massive steel fleet ascended in tight formation, deep red halos pulsating around their hulls—the visible signs of the anti-gravity systems coming online.

Xu Xi stood firm on the ship’s deck, shielded by thick energy barriers that blocked out the roaring winds and all external interference.

He watched as the heavy metallic vessels floated into the stars, their immense forms shrinking into the darkness, silently venturing into the unknown void.

The vastness of space defied description. If one had to compare it, it would be an endless dream stretching beyond reach—so vast it felt absurd, so dark it sent shivers down the spine.

It was both grand in its majesty and crushing in its emptiness.

Only by standing before the cosmos could one truly grasp their own insignificance.

“Ailei, how does it feel?” Xu Xi asked. He had long since experienced the brilliant yet haunting beauty of space, but he was curious about his companion’s thoughts.

Ailei gazed at the starry sea for a long moment before replying, “I think… it’s not as beautiful as you, Master.”

Her voice was calm and serious.

[The journey to chase the stars has begun.]

[The dark universe holds countless unknowns—dangerous yet filled with infinite possibilities.]

[You have a strong feeling that this journey will not be peaceful. Even without enemies, the harsh environment of space itself is enough of a threat.]

[But this is a necessary step for the development of civilization.]

[The planet the Federation once inhabited is limited in resources and can no longer support your growing needs.]

[If you wish to advance your technology and uncover greater truths, the only way is to venture into space.]

You once asked Ailei if she wished to stay behind on the Federation planet—safe and secure, free from the dangers of the unknown.

Ailei firmly rejected the idea.

[“My machine soul, my data, my everything exists only for you, Master.”]

Her unwavering loyalty and devotion left no room for hesitation.

Even if countless dangers awaited, Ailei was determined to stay by his side until the end of her machine soul’s lifespan.

The galaxy stretched endlessly, with the Milky Way shimmering in the distance.

Xu Xi’s journey among the stars had officially begun.

He spent his days inside the ecological starship, tirelessly researching the ship’s engines, striving to develop faster-than-light travel. Only then could he traverse the vast cosmos more efficiently.

[Ding—]

[The engine is pleased. Ailei is not.]

[Ding—]

[The engine is very pleased. Ailei is very displeased.]

One day, after finishing his research, Xu Xi sat down, staring at the bland meal in front of him—another block of pre-packaged food.

“Ailei,” he called.

“Yes, Ailei is not pleased to serve you,” she responded, expressionless yet undeniably expressive in her own way.

[Machine souls wear their emotions on their faces. Though Ailei’s joy and sadness may not be as vivid as a human’s, she never hides them.]

Xu Xi resumed his research, but this time, he entrusted Ailei with more tasks, delegating responsibilities to her.

His trust and reliance made Ailei genuinely happy.

Soon, his meals returned to their previous richness and variety.

One day, during a break, he noticed Ailei flipping through a book, her expression serious and focused.

Watching her with pride, Xu Xi thought to himself, Not only is Ailei loyal, but she’s also a diligent learner with great potential.

…

[Simulation Year 17: You are now 36 years old, and Ailei has been with you for 15 years.]

[In your second year of space travel, life aboard the ecological starship remained largely unchanged—studying technology and spending quiet days with Ailei.]

[Though uneventful, the routine was not boring.]

[You never felt lonely because Ailei was always by your side.]

“Master, do other civilizations really exist in the universe?”

“Yes, they do.”

The universe was silent and dim.

At times, Ailei would stare out into the void and ask about the true nature of the cosmos, but her curiosity never lasted long.

Her silver-blue eyes remained calm, and after learning bits of the universe’s reality, she would quietly return to serving tea to Xu Xi.

It wasn’t that she lost interest; rather, she had something more important right in front of her.

Even a machine, even cold metal, could understand what was truly precious.

…

[You and Ailei continued your journey.]

[Despite the high speed of your starship, from a visual perspective, it felt as though you were standing still within the vast expanse.]

[You paused your journey to refuel the fleet at a nearby gas giant.]

…

[Simulation Year 18: You are now 37 years old, and Ailei has been with you for 16 years.]

[The fleet set off once again.]

[This year, you successfully enhanced the starship engines, allowing for faster travel speeds.]

[Meteors streaked past on both sides, and distant stars illuminated the hulls of your ships.]

[The dark, cold void of space remained an unchanging backdrop, year after year.]

[Ailei’s machine soul continued to radiate happiness.]

…

[Simulation Year 20: You are now 39 years old, and Ailei has been with you for 18 years.]

[Ailei has started to change.]