My Fairy Growth System

Hei Kui, the Demon Emperor, was initially basking under the warm sunlight, enjoying a peaceful moment, when suddenly the glowing light surging from the ground interrupted his leisure.

Sensing the terrifying power of the Formation, he immediately activated all his Spiritual Power, transforming into his Black Rhinoceros True Body. His naturally dark skin already possessed astonishing defensive capabilities, and now it was covered by a set of earthy yellow Supreme Immortal Armor that wrapped around his entire body.

The attack of the Nine Directions Slaying Immortal Formation struck Hei Kui's armor and did not have much effect. Had the Wuya Emperor Sovereign not suddenly launched a sneak attack back then, Hei Kui's defenses would not have been breached so severely.

"Who? Who dares to ambush your Grandpa Hei Kui?" Hei Kui, the Demon Emperor, roared furiously, his sharp horns flickering with cold light, ready to deliver a fatal blow to his enemy at any moment.

But his heart had sunk to the bottom; the enemy had set up such a significant Formation right under his nose without making a sound, and he still hadn't caught any trace of the enemy, which showed just how extraordinary their methods were.

Yu Qingtan, using the Trace Concealment Technique, hid in the distance, completely ignoring Hei Kui's words and continued to let the Nine Directions Slaying Immortal Formation attack. Although the Formation consumed Immortal Crystals at an extremely fast rate, she had plenty of them now.

Attacks such as golden sword radiance, vine entanglements, torrential surges, blazing fires, enormous mountain pressures, and Space Blades came one after another, causing Hei Kui immense suffering.

There's a saying, "Many ants can kill an elephant," and moreover, the attacks of Nine Directions Slaying Immortal Formation barely reached the Tribulation Crossing Stage. Although Hei Kui's defense was strong, it ultimately had a limit, and what was worse, he had already sustained severe injuries.

Hei Kui roared continuously as his body swelled, transforming into a colossal rhinoceros thousands of feet tall. The Bloodline Power within him boiled, and the surrounding nature's spiritual energy furiously surged into his body, then he charged full force, attempting to break through the invisible boundary of the Formation using his sharp horn.

Unfortunately, the Nine Directions Slaying Immortal Formation contained the mysteries of Space Law. He appeared to be charging in a straight line, but he was actually circling within the Formation without ever hitting the boundary, like a punch hitting cotton.

Effortlessly borrowing nature's spiritual energy is another hallmark ability of an Eighth Stage existence, but Hei Kui quickly realized he could hardly feel nature's spiritual energy anymore.

The Nine Directions Slaying Immortal Formation could even block the entry of nature's spiritual energy, something many Eighth Stage Arrays could not accomplish.

Hei Kui continued to attack, but the Nine Directions Slaying Immortal Formation seemed like a bottomless pit, continuously devouring his Spiritual Power and gradually draining his strength.

"Damn it! Who is it? Come out!" Hei Kui's voice now carried a hint of panic; he had never encountered such a problematic situation before. The constant attacks from the Formation gave him almost no chance to catch his breath.

"I have already sent a distress signal to the other Demon Emperors. They will soon arrive, and then it will be your time to die!" Seeing no response from the other side, Hei Kui continued to shout.

Regarding this, Yu Qingtan remained completely unmoved. Having decided to slay a Demon Emperor, she would not make such an oversight. Inside the Nine Directions Slaying Immortal Formation, a world unto itself was formed, making conventional communication methods completely inoperable.

Before Hei Kui could finish speaking, the dynamics within the Nine Directions Slaying Immortal Formation intensified once more. Originally, various Principle Attacks were taking turns, but now, led by an invisible force, they began to merge and intertwine, forming even more complex and powerful compound attacks.

Golden sword radiance entwined with flames, transforming into blazing Golden Dragons that darted through the Formation, igniting the space they passed through, leaving trails of scorch marks. Vines combined with water flows, creating massive water-wood tornadoes that sealed the space around Hei Kui airtight, with each rotation stripping away a large amount of his demonic power.

The Heaviness of Earth combined with the absolute suppression of Strength formed invisible colossal mountains that squeezed from all directions, making it difficult for Hei Kui to breathe. Meanwhile, the Space Blades, hidden within these attacks, silently sliced through the space, searching for any defensive flaws in Hei Kui.

The defense of the Supreme Immortal Armor hadn't been breached, yet the attacks that struck Hei Kui Demon Emperor had the effect of "punching a cow over a mountain," worsening his already injured body and rapidly depleting the Spiritual Power within him.

"Stop, as long as you promise not to harm my life, I am willing to submit and become your Spiritual Beast, otherwise I will self-destruct and leave you with nothing!" Faced with the threat of death, the proud Hei Kui Demon Emperor spoke words of surrender and appeasement.

The attacks indeed ceased, and then a stunning woman in a red battle skirt with a pair of crystal-clear wings on her back appeared within the Nine Directions Slaying Immortal Formation—naturally, it was Yu Qingtan.

"Fairy, I am willing to submit!" The huge eyes of Hei Kui Demon Emperor glanced at Yu Qingtan, and then he lowered his head and spoke.

Yu Qingtan watched the bowed Hei Kui Demon Emperor quietly. Her red lips slightly parted, her voice cold yet carrying an undeniable authority, "If you truly wish to submit, you must open your Sea of Consciousness and allow me to implant a Soul Constraint."

After all, having a Demon Emperor as a Spiritual Beast wasn't so bad.

Upon hearing this, a flash of ruthlessness passed through Hei Kui Demon Emperor's eyes, then he slowly closed his eyes and opened his Sea of Consciousness.

However, just as Yu Qingtan was about to implant the Soul Constraint, Hei Kui Demon Emperor's rhinoceros horns flew out unexpectedly, transforming into a streak of black light, and charged at Yu Qingtan with incredible speed.

"Haha, a mere Seventh Stage Cultivator wants to make this Demon Emperor submit? Die!"

Hei Kui Demon Emperor laughed. His rhinoceros horn, with attack power and speed comparable to that of a Supreme Immortal Artifact, now driven by all the Spiritual Power within his body, could fatally wound even another Eighth Stage being if it struck.

The rhinoceros horn indeed impaled Yu Qingtan, and its power was truly enough to kill her, but fortunately, Yu Qingtan possessed an Innate Divine Ability.

"I gave you a chance, yet you failed to cherish it. Five Elements Realm!" Yu Qingtan's figure disappeared in the black flash made by the rhinoceros horn, only to reappear intact next to it a moment later.

In this retreat, Yu Qingtan had integrated the Great Stabilizing Divine Art and the profundities of Spatial Confinement into the Five Elements Realm, alongside the various Powers of Laws contained within. Its power was terrifyingly immense, instantly fixing the severely injured Hei Kui Demon Emperor in place.

Then, Yu Qingtan held the Coiling Dragon Stick with all her strength and smashed it towards the head of Hei Kui Demon Emperor.

The immense Power of the strike directly penetrated the defense of the Immortal Armor, turning the brain of Hei Kui Demon Emperor into pulp.

Subsequently, Yu Qingtan also cast the Soul Cleansing and Shaking Technique, completely eradicating the lingering soul of Hei Kui Demon Emperor.

A Demon Emperor was successfully defeated in battle by the Seventh Stage Yu Qingtan and killed under her control.

Yu Qingtan gathered the spoils of war and erased traces of the battle. Then, using the Reincarnation Mantra to disguise herself as Qian Chengying, she dismantled the Nine Directions Slaying Immortal Formation and without paying any attention to the other members of the Black Rhinoceros Demon Clan outside the Formation, she directly left the Black River Swamp.