In the previous realms, only in the Nascent Formation realm would one need to form their Qi Origin Seed to advance. During this process, the risk of dying was far lower as Nascent Qi isn't nearly as intense as the other forms of Qi.
Afterward, the subsequent forms of Qi energies only passively strengthened the Qi Origin Seed.
The accumulation continues until the point where the Qi Origin Seed reaches its maximum limit.
When pouring Sage Qi into the Qi Origin Seed, it was taking the final steps towards the first crucial dantian evolution!
Cain's Qi Origin Seed continued to intensely quiver and pulsate as spiderweb cracks rapidly formed all over it.
Closer and closer, it was reaching the final cusps of breakthrough.
It was an astonishingly quick process.
Only thirty minutes after the process began, Cain felt his Qi Origin Seed trembled harder than ever.
It was to a point where his whole dantian felt like it was experiencing a high-volume earthquake.
Then, with a loud bang, Cain's Qi Origin Seed exploded in an enormous storm of Origin energy!
"Geh!" On the outside, Cain spat out blood, feeling immense pain wrack his entire being.
For the previous realm, the Qi Origin Seed exploding would mean a Martial Cultivator becoming utterly crippled. The foundation of their dantian was destroyed, never to be brought back again.
However, in the breakthrough process of the Sage Core realm, the Qi Origin Seed exploding was the last and most dangerous step.
The Sage Qi Origin Marks strengthened the dantian's space by 19 times. Minor Source Law essence similarly enhances both the dantian's space and overall structure by at least 10 times.
And all previous forms of Qi energies continuously evolved the body and dantian's foundation to the point where it is even stronger than a steel wall.
All these factors allow the dantian to withstand a Qi Origin Seed explosion!
Cain was an incredible amount of pain, but he directly suppressed it, allowing for his mind to become completely clear and focused.
In this state, his soul sense quickly detected the tiny grains of Origin energy flowing throughout his dantian mist.
The explosion gave birth to a pure amount of Heaven and Earth Origin energy.
Cain was taught this was replicating the process of a universe-shattering and exploding to give birth to new life.
From this point on, Cain was stepping into the process of forming his own Inner World universe!
Cain's soul energy grasped the pure tiny Origin energy grains and stimulated his 19 Origin Marks to release another stream of Sage Qi.
With seamless control, Cain fused the tiny Origin energy grains with the stream of Sage Qi, manipulating the fusion of energies to form into a small swirling vortex core.
The swirling vortex core had a bright light green shine with slight streaks of blue mixed within.
This was Cain's Sage Core!
Upon the formation of the Sage Core, Cain's entire being experienced a massive evolution!
His body violently trembled as soul energy wildly discharged out from him.
Streams of light green Sage Qi visibly formed in the air. They directly soared into Cain, fusing into his internal body and dantian.
A black substance briefly covered Cain's entire skin before quickly shedding off, revealing a brand new glossy layer of skin.
Within his dantian, Cain had gained another Sage Qi Origin Mark, bringing his total up to twenty!
Furthermore, the abundance of dense Sage Qi rapidly strengthened the dantian's space and completely transformed his miles-long Sky Ruler mist.
Now, the dantian's mist was of a light green color with a slight streak of luminous blue.
This was Cain's Sage Core mist.
At this moment, Cain had reached the Sage Core realm!
Cain snapped his eyes open a few seconds later. Gazing down to his palm, he clenched it a few times, feeling his joints crackled with explosive power.
'Sage Core realm, huh? What an amazing feeling of power!'
A fire burned within Cain's eyes. He felt as if a single punch from him could split the air apart, spewing out airwaves that can slice anything on its path.
Although, because this is the God Galaxies realms, Cain knew it was impossible.
He quickly calmed himself down and awaited Kali and Amber's proceeding breakthrough.
With a quick sweep of his soul sense, he detected both girls to be on the very edge of reaching the Sage Core realm.
Minutes later, two explosive Sage Core aura wildly surged for a couple of miles.
Cain nodded, sensing that the girls broke through simultaneously.
Crossing his arms, Cain watched as Kali and Amber rapidly flew over to him.
None of them wanted to break through close together as their auras had the potential of disturbing one another.
It wasn't like the previous realm where they could ignore each other breakthrough phenomenons.
Moreover, there was even a chance for death! They needed to have the utmost focus.
When nearing Cain, Kali and Amber had evident elation running within their eyes. But their faces showcased a solemn expression.
Kali nodded towards Cain, saying, "With this, we officially achieve the first Inner World step all on our own. Now should be Heavenly energy, right?"
At her words, Shi Wei suddenly appeared, having overseer their breakthrough process from the beginning.
She said, "Indeed, everything went perfectly. Now, your cultivation will be smooth for a little bit. Little Cain, take us back now."
With a quick mental command, Cain called for Heavenly energy to instantly engulfed them.
The group was then brought through a black portal.
....
Within the Nightmare realm white space, Heavenly energy swirled, forming into a black portal.
Four people walked out of the portal: Cain, Kali, Amber, and Shi Wei.
Once arriving in the Nightmare realm, Cain summoned his Chaotic Emerald and released Nightmare Lord's soul body.
Nightmare Lord had a genuine look of praise as he appeared in the outside world. Even on his slightly blurry soul face, one could make out the corners of his lips curling.
The gaze that he cast on Cain's group went through a slight change.
He praised, "Excellent. As expected of Master's group talent. Reaching the Sage Core realm was a simple, natural step. And now, you three can withstand the intense force of my Dao Diagram's Heavenly energy. But remember, you must not lose the slightest bit of focus. After this, you will automatically reach the Sky Sage Realm while also significantly improving your foundations."
Cain, Kali, and Amber seriously nodded, their eyes burning with motivation.
While Shi Wei had a flicker of complex emotions within her eyes. 'To think their luck would be this good. I wonder just how many Heavenly Great World geniuses can experience the same circumstances?'
Shi Wei inwardly sighed.
Shi Wei's thoughts weren't unfounded at all. Truthfully, only a very rare oddity like Cain could experience something like this.
One could say this was the highest form of breakthrough cultivation throughout the massive God Galaxy.
After all, the Dao Diagrams fueling the Nightmare realm is the combination of a previous Heavenly Venerate's essence, Source Laws, and thousands of years of the purest Heaven and Earth Divine Essence.
Just what is a Heavenly Venerate?
They are all greatly resounded and revere legends that known to be equal to the Heavenly Dao itself!
Meaning, in terms of foundational energy, Source Law formulation, and the Spirit of Life, these abilities stand near the summit of the entire universe.
Putting it in perspective, the Dragon Celestial Pool is the accumulation of tens of thousands of years. It withholds the essence of previous top-tier geniuses and a Holy King's Dao Diagram.
In Shi Wei's ranking, the Dragon Celestial Pool is the equivalent of a sacred cultivation ground from an ordinary Holy Land force in a Heavenly Great World.
And these sacred cultivation grounds have the backing of their own Heavenly Venerate expert.
Comparatively, Shi Wei can safely say the Heavenly energy here is thousands of times greater!
Nightmare Lord's Dao Diagrams continually fueled itself on the outside world, sustaining itself rather than completely weakening because of needing to support waves of talented disciples.
It is true that the Dao Diagrams had weakened from their peak state, but it was still numerous times greater than a Heavenly Great World's cultivation sacred ground.
In all aspects of their Martial cultivation, Cain, Kali, and Amber won't lag behind at all.
But before anything occurred, Cain suddenly glanced towards Amber, asking in a gentle tone, "Are you sure you're not feeling pressure to go along with us? Truthfully, you can leisurely cultivate, and nobody would dare to find an issue with you."
Amber only gave a small smile filled with warmth. "And bring potential problems to you? I don't think so. Besides, I need to raise my martial cultivation sooner rather than later. Otherwise, I'll just hit an inevitable roadblock with my Spiritual Path."
Shi Wei approvingly nodded and said, "Indeed, the Spiritual and Martial Path became closely interlink as several eras gone by. Still, if anything appears to be going awry, I will step in. Now then, let's begin."
Cain, Kali, and Amber quickly assimilated into a cultivation state.
Nearly all of their soul energy reserves poured into their mental psyche, pushing each of them to their maximum focus.
Nightmare Lord took one glance at them and then waved his palm, causing a small portion of Heavenly energy to swirl above him.
Manipulating the Heavenly energy, Nightmare Lord divided the small portion into three streams. He flowed it into Cain, Kali, and Amber's bodies.
As Heavenly energy gradually absorbed into them, Cain, Kali, and Amber felt as if their whole world was trembling!
Their bodies were instinctively quivering as if it was bearing an intense force; their expression tightened to the point blue veins gradually emerged on their foreheads.
The power washing over them was tremendously intense!
Cain recalled the air pressure he felt from Crimson Sea Academy's Storm Tunnel. And what's he experiencing currently was at least thousands if not tens of thousands of times greater!
Only a small percentage of Heavenly energy fused into the trio's internal body.
But just this was enough to bring about incredible transformation.
Their bodies were already rapidly strengthing to the standard of a Sky Sage!
And it didn't stop once reaching Sky Sage standard.
Just a sliver of Heavenly energy continues to reinforce Cain, Kali, and Amber's bodies to unfathomable levels.
The remaining Heavenly energy is absorbed into their dantians. Immediate changes also occurred within them.
Cain, Kali, and Amber's cultivation began the process of soaring to the skies in a single step!