Reverend Insanity: The Gacha System

The Gu is almost finished, with only one critical step remaining: the complete dissolution and absorption of the Dao marks into its core. As the Dao marks merged, the Gu began to emit an intense, radiant light, glowing like a miniature sun suspended in midair. The process, which would typically span twenty years, was accelerated by the powerful time formation enveloping the refinement chamber.

The Gu slowly transitioned, its form pulsating as if alive. The bright ball of light began to shrink, its radiance becoming more focused and contained. The edges of the sphere softened, and intricate patterns of Dao marks surfaced on its exterior, weaving together like an intricate tapestry of energy.

As the light condensed further, the shape of a tiny, translucent fetus emerged within the core of the Gu. The fetus glowed faintly, its form delicate yet brimming with potential.

Its limbs were curled, and its tiny heart pulsed with an ethereal rhythm, each beat resonating with the harmony of the Dao marks. The once-blinding brilliance of the Gu now radiated a soft, nurturing light, signaling the completion of its transformation into a Fetus Gu. 

The Gu has reached its pinnacle stage, the highest rank ever achieved for any Gu: the Rank 10 Chaos Immortal Fetus Gu. This type of Gu had never been seen before, its perfection surpassing the limits of human's imagination.

The culmination of all of Li Tian's efforts, resources, and meticulous planning had led to this moment. Every material he had gathered from the beginning of his journey to now, every ounce of effort expended by his Rank 8 clones, was poured into the refinement.

Despite their own limitations, they had succeeded in creating a Rank 10 Gu, a feat made possible by the guidance and help left behind by Thieving Heaven Demon Venerable. This Gu embodied the ultimate balance of Chaos Dao marks, a testament to perfection itself. 

What are Chaos Dao marks, or what is Chaos? Chaos is the amalgamation of Creation and Destruction—the dual forces that form the foundation of the universe. While the Gu World differs from other realms, it is surrounded by the vast and untamable energy of Chaos.

Nobody can truly handle Chaos energy; even Limitless Demon Venerable met his end while attempting to use it to achieve eternal life. Chaos holds power far surpassing any limits, even those of Heaven Path, which pales in comparison by an unfathomable margin.

Throughout history, no one has successfully embarked on the Chaos Path. Li Tian's unique journey made this possible—being a double transmigrator with knowledge surpassing that of any living being.

Originally from a modern world where he had read the Reverend Insanity novel, Li Tian was first transported to a magical world. There, he achieved unparalleled heights, surpassing all others of the magic world.

Among all the venerables, or even compared to Zhu Yin, Li Tian had lived the longest, with a lifespan stretching to nearly 100,000 years. Despite his immense power and achievements, the ultimate breakthrough eluded him.

The frustration of reaching a plateau in his cultivation drove him to seek a higher truth. It was during this relentless search that he discovered Chaos—a force unlike any other, holding the potential to surpass all known limits. Obsessed with mastering it, he scoured countless universes until his search led him to the Gu World.

The Gu World's barriers proved more formidable than any other realm he encountered. Its defenses were built upon Chaos, Heaven Path, and countless other Dao marks, making forced entry impossible. His breakthrough came when he observed a wandering soul entering the world, inspiring him to transmigrate. Yet, this method exposed his vulnerabilities, drawing attention from opportunistic enemies.

To safeguard his plan, Li Tian brought Zhu Yin, formerly the Heavenly Demoness Sect leader. Zhu Yin, who once sought to kill him with Yue Shiyin's aid, had been enslaved by him.

However, upon arriving in the Gu World as an experiment, she discovered her slave marks had vanished. Enraged by her newfound freedom, she unleashed her full might against Li Tian. Despite her relentless attacks, Li Tian's superior intellect ensured his victory each time.

The 100,000 years Li Tian had lived were divided between the Gu World, the modern world, and the magical world. During his time in the Gu World, he lived in the era of Star Constellation Immortal Venerable, where he not only stood as her equal in cultivation but also became her husband.

He lived for nearly 1,000 years during that era, during this all time he fought Zhu Yin head-on while Zhu Yin was still in Star Constellation's mind and soul. The battle dragged on even after Star Constellation merged with Heaven's will.

Eventually, they reached a mutual agreement. Their long conflict would culminate in a single contest: whoever claimed the Chaos Gu would emerge as the ultimate victor, ending their battle once and for all.

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Sorry for the delay; I had some studying to do.