Chu Chen looked at Nirvana with some anxiety and said gravely, "Nirvana, this evolution's pain far exceeds the past, but it will grant you even greater power. Are you willing?"

The man and the creature were in sync, and Nirvana naturally understood the meaning in Chu Chen's words.

Among the five Guardian Beasts, Chu Chen's desire for power was much stronger than that of the other four Guardian Beasts.

After all, it had once been abandoned by its previous master due to its lack of strength.

Even though the grudge had been avenged, its deep desire for power had never diminished in the slightest.

When Nirvana heard it would gain stronger power, it did not hesitate for a moment, letting out anxious "chirp chirp" sounds.

Chu Chen sighed when he saw this, patted its head, and said solemnly, "Since you have decided, I will fulfill your wish." With that, he fed the undead crystal to Nirvana and then poured in the Evolution Potion.

If this evolution succeeds, Nirvana will undergo a complete transformation.

Because the evolutionary path Chu Chen chose for it was the Soul-devouring Nether Ant, a true undead element Guardian Beast.

Of course, when choosing the evolution path, Chu Chen also retained its original attributes and skills.

Otherwise, just one undead crystal could complete Nirvana's transformation.

The Evolution Potion served the purpose of retaining its original attributes.

After taking the potion, Nirvana lay quietly beside, waiting for the potion to take effect.

A minute later, a thick fluctuation of Star Power emanated from within Nirvana.

Chu Chen felt the Star Power fluctuation and immediately focused his mind to observe Nirvana's changes.

It's not easy to say he's not worried; successfully transforming into an undead is incredibly challenging.

It's not a problem with the formula in the Slaughter Atlas, but rather the pain endured during the transformation far exceeds human imagination.

If any thought of giving up occurred during the transformation, it would lead to failure, resulting in a semi-undead state, significantly weakening its power and ending its evolution path. The more severe consequence is sudden death.

As the Star Power within Nirvana grew increasingly intense, the undead crystal began to take effect, sending waves of agonizing wails and screeches from within Nirvana.

This sound was extremely uncomfortable, even spreading a chill throughout one's entire body.

Transparent souls darted around within Nirvana, the intense pain constantly stimulating its nerves.

Even with Nirvana's endurance, it began trembling all over.

This pain did not just come from the physical body but more from the soul.

As the number of souls increased, the pain Nirvana endured gradually escalated.

Its body's trembling grew more intense until it collapsed on the ground, letting its body's nerves react naturally.

Only at this moment did Nirvana begin to scream in agony.

Nirvana's tenacity was extreme; even during battles with devastating injuries, it never screamed, indicating how severe the pain from this transformation was.

Lei Yao saw Nirvana's state and couldn't help letting out a low growl, seemingly encouraging it.

Lei Yao, being impatient, paced back and forth on the spot, occasionally scratching its cheek fur, looking extremely anxious.

Shadow Kill circled above Nirvana, letting out a series of low "chirp chirp" sounds.

Cage coiled up, with its head lowered, its snake eyes filled with worry.

Feng Shuang sat on one side, arms wrapped around knees, head buried within the arms, afraid to watch Nirvana's painful state.

In fact, the bond between Cage and Feng Shuang with Nirvana was deeper than with Chu Chen.

From enlightenment to sparring, and slowly growing, Nirvana always accompanied them, more like a father silently protecting his children than a mere partner.

Chu Chen sat in front of Nirvana, gently stroked its head with his right hand, softly encouraging, "Nirvana, you must hold on. Our journey here has not been easy, you have to continue with me to see even more beautiful sights."

Upon hearing this, scenes from its life flashed through Nirvana's mind.

From being contracted by Fang Tao at birth, it thought of him as the closest person. No matter how he beat or scolded, it endured silently.

Until it met Chu Chen, Fang Tao harbored great hostility towards him and often ordered it to kill him, but unfortunately, it lost in the competition.

It never expected that just because of this defeat, it would be ruthlessly abandoned by Fang Tao; its heart was dead at that moment.

What it never imagined was that the young man would actually save it and take it home, telling it stories of his adventures.

From then on, its heart gradually began to revive, gradually accepting the young man.

Later, the young man contracted with it, they fought and grew together, it became stronger. However, the young man seemed exceptionally brilliant, facing increasingly fierce opponents, making it often feel overwhelmed.

Thus, it wanted to become stronger to protect the young man who never abandoned it, even if the process was extremely painful, there would be no hesitation.

This determination supported it to not give up. Nirvana forced itself up, its insect legs making a "crackling" sound as its hard insect armor cracked inch by inch, only to be replaced by a thicker gray-white insect armor.

However, this process seemed extremely painful, and Nirvana's cries became even sharper and more urgent.

Seeing this, Chu Chen promptly soothed, "Nirvana, hang in there, the transformation is almost complete."

Lei Yao and the other Guardian Beasts also let out low growls, encouraging Nirvana not to give up.

Time passed slowly, and the transformation gradually approached its end.

At this moment, Nirvana was voiceless; it opened its mouth but couldn't make any sound. Even so, it hadn't given up, looking at its master and partners with a gaze full of determination.

As the last piece of insect armor on Nirvana's head was replaced by gray-white bone, its transformation was fully completed.

"Roar"

A hoarse roar came from Nirvana's mouth, and its body's aura began to surge madly, from Lord Level First Rank, Second Rank... until it reached the Fifth Rank Lord Level before stopping.

Chu Chen was immediately overjoyed at the sight, it seemed the previous pain was worth it, breaking through four minor realms consecutively, saving it months of hard cultivation.

After completing the transformation, Nirvana's appearance had undergone an earth-shattering change.

Firstly, its size: its shoulder height surged from one zhang to two zhang, and its body length grew from two zhang to now four zhang.

Secondly, the change in insect armor: the metallic, pitch-black insect armor was entirely replaced by ferocious bone armor.

Sharp bone spines protruded high, resembling a porcupine in a defensive stance.

The previously black, beady eyes now burned with ghostly green flames, and its antennae had transformed into bone whips, maintaining rigidity while being extremely flexible.

Finally, its aura: before, Nirvana had a peaceful aura, giving a harmless impression, but now its whole body exuded a deathly aura, chilling to the core.

Chu Chen eagerly summoned the Slaughter Atlas to check Nirvana's information.

Star Beast Name: Soul-devouring Nether Ant

Life Level: Growth Stage

Star Beast Quality: Epic Level, Upper Grade

Star Beast Talent: Disguise D-level, Braver and Braver D-level, Endless Life D-level, Soul-devouring C-level

Star Beast Level: Fifth Rank Lord Level

Power Talent: A-level

Defense Talent: A+ Level

Agility Talent: B-level

Physical Talent: B+ Level

Soul Power Talent: B-level

Star Power Talent: A-level

Star Beast Attribute: Wood Element, Earth Element, Undead Element

Star Beast Skills: Jaw Scissors (Ordinary Level, Great Success Realm), Wooden Cone (Elite Level, Great Success Realm), Earth Rock Armor (Elite Level, Great Success Realm), Limb Regeneration (Elite Level, Great Success Realm), Cycle of Mutual Birth (Excellence Level, Great Success Realm), Undead Summoning (Perfect Level, Entry Realm)

Chu Chen looked at Nirvana's information and could hardly contain his joy.

The changes in Nirvana were so significant, equating to a complete transformation is not an exaggeration.

After evolving into a Soul-devouring Nether Ant, it not only retained its Wood and Earth attributes but also gained an additional attribute, a talent, and a perfect quality skill.

Nirvana's overall strength increased by at least double, and in group battles, its potential strength could multiply several times, up to more than tenfold.

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