The Demon Leader felt the increase in Allen's strength, and he couldn't help but feel a trace of uneasiness in his heart. He begins to realize that Eren is not as weak as he thinks, and that his power is gradually beyond his control. This made the Demon Commander feel unprecedented fear.

Allen's attacks became sharper and sharper, and each shot carried unparalleled power. His body seemed to turn into a golden whirlwind, shuttling between the attacks of the demon commanders with great speed and speed. Each of his counterattacks was accurate, unexpected.

The Demon Leader's heart was filled with unease and fear, and he began to wonder if he would be able to defeat this powerful opponent. There was a hint of hesitation in his eyes, and he didn't know how to respond to Allen's attack.

Allen's power grew stronger and stronger, and each of his attacks made the Demon Commander feel unstoppable. With the sound of his fist breaking through the air, it smashed into the Demon Leader like a meteor. Each punch brought a huge impact, so that the demon leader had to retreat again and again.

The Demon Leader felt his power waning, and he began to regret his contempt. He realizes that Eren is not as weak as he thinks, he is a true warrior with unparalleled strength.

Under Allen's attack, the demon leader began to become embarrassed. His body was bruised from the blows, and blood was pouring out of the wounds. His eyes were full of anger and helplessness, and he was unwilling to be defeated by a human.

However, Eren didn't give the Demon Leader a chance to breathe. His attacks became more and more violent, and each shot made the Demon Commander feel that he could not resist. His body emitted a powerful energy fluctuation that suffocated the Demon Commander.

The Demon Leader begins to despair, and he realizes that he is no longer able to defeat Eren. His body began to tremble, and his eyes were full of fear and unwillingness. He knew he was about to fail.

At this moment, a mysterious light suddenly appeared behind the demon leader. The light emitted a powerful wave of energy, making the Demon Leader tremble. He turned around and saw a figure standing there, his eyes revealing a mysterious power.

This figure is none other than the legendary Mysterious Warrior, who possesses unparalleled strength and intelligence. His presence gave the Demon Commander a glimmer of hope, and he knew that only by relying on this mysterious warrior could he defeat Eren.

The mysterious warrior walked towards the Demon Commander, his eyes revealing a hint of indifference and mockery. He said to the Demon Commander, "Do you think you can defeat Alan? You are so naïve. His power is beyond your imagination, and you don't have any chance of winning at all. ”

The Demon Leader felt a wave of anger, and he was unwilling to accept this fact. He shouted, "I will not be defeated by a single human!" I am the leader of the demons, and I have endless power! ”

The mysterious warrior sneered, a glint of disdain in his eyes. He said, "Your strength is no longer enough to compete with Allen, you are just an obsolete existence. Now, I'm going to show you the true power. ”

The mysterious warrior stretched out his hand, and a ray of light emanated from his palm, instantly enveloping the demon leader. The Demon Leader felt a powerful force surging into his body, and his body began to change, and a dark aura spread.

Under the guidance of a mysterious warrior, the demon leader arrives in a mysterious place. It is a forgotten temple that exudes an air of antiquity and mystery. The mysterious warrior tells the Demon Commander that this is a legendary source of power, and that only by testing the temple can he gain true power.

The Demon Commander accepted the test without hesitation. The temple is full of traps and trials, but the Demon Leader has managed to survive each level with his wits and strength. Each trial strengthened him, and the aura of darkness became stronger.

Eventually, the Demon Leader came to the deepest part of the temple. There, he saw a huge black crystal that exuded powerful energy. The mysterious warrior told him that this was the heart of darkness, the source of demonic power.

The Demon Commander stretched out his hand and lightly touched the Heart of Darkness. A powerful wave of dark energy instantly poured into his body, and he felt his power reach a new level. His eyes became more fanatical, and he believed that he was strong enough to defeat Allen.

However, just as he was basking in the joy of power, a powerful light suddenly emanated from the heart of darkness. The Heart of Darkness began to tremble, emitting a low humming sound. The Demon Leader felt a powerful force competing with his dark power.

He looked at the Heart of Darkness in amazement, a feeling of unease welling up in his heart. The light of the Heart of Darkness grew brighter and brighter, almost illuminating the entire temple. The Demon Leader felt that his power was beginning to unstable, and the dark energy seemed to be unable to fully control this powerful light.

Suddenly, the Heart of Darkness let out a loud bang and burst open. A dazzling light flew out of it, enveloping the entire temple in light. The demon leader was surrounded by light, and felt that his body was bound by an invisible force, and he could not move.

In the center of the light, a mysterious warrior in white robes appeared. There was a divine and solemn aura in his eyes, as if he was a messenger from heaven. The mysterious warrior looked at the Demon Commander, and his voice was full of compassion and warning: "Demon Commander, your power comes from the Heart of Darkness, but darkness is not your destination. There is still a spark of goodness in your heart, don't let it be consumed by darkness. ”

The Demon Leader was stunned, he never thought that he still had a trace of kindness. He used to be an ordinary demon, but under the temptation of the heart of darkness, he became more and more cruel and ruthless. He thought he was completely immersed in darkness and there was no turning back.

However, the words of the mysterious warrior made him think deeply. He reminisced about his life, his dreams and hopes. He remembered the once warm family, the mother who was full of love and care for him. His heart began to waver, and he was no longer sure if he really wanted to be the Lord of Darkness.

The mysterious warrior looked at the inner struggle of the demon leader, smiled and stretched out his hand: "You still have a chance to choose, choose to return to the path of light." Let go of the heart of darkness and find the fire of goodness within you. ”

The Demon Commander hesitated for a moment, then resolutely reached out and placed the Heart of Darkness in the hands of the mysterious warrior. The heart of darkness vanishes in an instant, replaced by a feeling of warmth and calm. He felt his body lighter, and the aura of darkness gradually dissipated.

The mysterious warrior smiled and nodded, "You made the right choice, Demon Commander. Now, you will be a warrior of light, fighting for justice. ”

The Demon Leader felt a new power flood into his body, and this power was completely different from the previous dark power. It was full of warmth and hope, and he felt more determined and courageous than he had ever felt before.

He realizes that he is no longer a demon leader bound by darkness, but a warrior with the power of light. He looked at the mysterious warrior gratefully, his heart filled with determination and gratitude.

The mysterious warrior leads the demon leader on the path of light. They walked through a dense forest and came to a magnificent castle. The castle towers into the sky and radiates a holy glow. This is the headquarters of the forces of light, and it is also the place where the demon leaders will belong in the future.

After entering the castle, the demon leader was warmly welcomed by many light warriors. They expressed their appreciation and encouragement for him to join, hoping that he would be able to contribute more to the forces of light. The Demon Leader felt that he was accepted and recognized, and his heart was filled with joy and pride.

At the training center of the forces of light, the demon leader began to undergo rigorous training. He learns the spells and techniques of light, and masters the use of the power of light.

The Heart of Darkness began to emit a burst of intense dark energy, encircling the demon lords. He felt his body become heavy and his strength began to fade. He is horrified to discover that the Heart of Darkness is not the source of power he imagined, but a trap.

The voice of the mysterious warrior rang in his ears: "Demon Commander, you are bewitched by the Heart of Darkness. It is not a source of your strength, but a temptation. It is only through the power of justice and goodness that you can truly ascend in power. ”

The Demon Leader feels that he has been fooled, and he realizes that he has fallen into a dark path. He was determined to find the true source of strength and not be blinded by darkness.

He begins to reflect on his actions and choices, recalling past battles and injuries. He realizes that his strength does not come from darkness, but from inner conviction and perseverance. He decided to abandon the Heart of Darkness and find the true source of his power.

The Demon Leader left the temple and embarked on a new journey. He began to look for the person or thing that would help him find his true source of strength. He traverses endless mountains and swamps, encountering a wide variety of creatures and challenges.

One day, he came to an ancient mysterious forest. This forest is guarded by legendary guardians, and only those who truly have the courage and determination to enter it. The Demon Commander took a deep breath and stepped into this mysterious forest.

There is a mystical energy in the forest, with trees towering into the sky and sunlight shining through the gaps in the leaves, creating dappled light and shadows. The Demon Leader felt his soul touched by the tranquility of this place, and he knew that this place must be hiding the source of true power he was seeking.

He walked along a narrow path, encountering various strange creatures from time to time. There is a winged elf who tells the Demon Leader that in order to find the true source of power, he must first find his inner balance. The Demon Leader thought deeply and realized that in his pursuit of power, he had neglected inner balance and harmony.

He continued on his way to a lake. The water of the lake is crystal clear, reflecting the sky and the surrounding trees. The Demon Leader leaned over to touch the lake and felt a warm energy. He closed his eyes, immersed himself in the energy of the lake, and began to think about his heart.

By the lake, he saw an old man in a white robe. The old man walked up to him with a smile and said, "Young man, have you come here to find the true source of power?" ”

The Demon Leader nodded, and he told the old man his story and pursuits. The old man listened quietly, and then said, "The real source of strength is not in the outside world, but in your heart. Your strength comes from your faith and perseverance, not from the darkness. It is only when you find inner balance and harmony that you can truly gain strength. ”

The Demon Commander fell into deep thought, and he understood the old man's words. He began to reflect on his actions and choices, and realized that darkness was only a lost path, and that the true source of strength lay in his inner perseverance and faith.

He decides to let go of the mistakes and darkness of his past and find his inner balance anew. He expressed his determination to the old man, hoping to get his guidance and help.

The old man smiled and nodded, and led the demon leader into the depths of the forest. They made their way through a dense woods to a mysterious altar.

On the altar is a glittering gem with endless power. The old man told the Demon Commander that this gem was a true source of power, but it would only choose those who were firm in their hearts and pursued peace and harmony.

During his journey, he befriends a wise and kind witch. She told him that the true source of strength was not in any matter, but in the depths of every human being. It is only through justice, kindness, and courage that he can truly ascend in strength.

The Demon Leader began to cultivate his heart, learn to control his dark power, and transform it into the power of justice and goodness. He learned to be tolerant and understanding, to protect the weak and to pursue justice. His power gradually increased, but this time it was real power, not a dark illusion.

Back on the battlefield, the Demon Leader shows off his newfound powers. His attacks became more ferocious, and dark energy swept in, engulfing everything. Alan was forced to step back, and he felt pressure like never before.

However, Alan didn't give up. He knew that his strength was also growing, and he believed that as long as he persevered, he would definitely be able to defeat the Demon Commander. He adjusted his tactics, using his speed and agility to constantly dodge the attacks of the demon commanders.

Allen's figure quickly shuttled through the battlefield, and he quickly dodged the attacks of the demon leaders like a gust of wind. His eyes were firm, and his heart was full of determination and courage. He knew that only by constantly dodging and looking for opportunities could he find a way to deal with the demon leader.

In an instant, Alan saw an opportunity. The Demon Commander's attack was slightly negligent, and his body was exposed to Allen's attack range. Without hesitation, Eren unleashed a fierce attack, his blade cutting through the dark energy and hitting the Demon Commander's body directly.

The Demon Commander let out a scream, his body pierced by the blade, and dark energy began to pour out wildly. However, to Allen's surprise, the Demon Leader did not fall, but fought back more and more violently.

Eren felt that his attack did not seem to cause fatal damage to the Demon Commander. He realized that the power of the Demon Leader was far greater than he had imagined, and that he needed more strength to defeat his opponent.

Determined to rekindle, Eren begins to look for ways to increase his strength. He remembered a mysterious energy he had heard of, which legend had been said to be mastered only by those with strong willpower and a pure heart. This energy is known as the "power of light", and it is the strongest weapon against the forces of darkness.

Eren decides to travel to the legendary "Land of Light" to find the source of this energy. He embarks on a journey full of dangers, through endless wastelands and treacherous forests. In this journey, he encountered many difficulties and challenges, but he never gave up.

Finally, Alan came to the legendary "Land of Light". It is a beautiful and mysterious place, with sunny days and lush flowers. Here, Alan felt a powerful energy, which was filled with the power of hope and justice.

Eren began to cultivate, and he bathed in the power of light, constantly absorbing this energy. His body gradually became stronger, and his willpower became stronger. In the process of cultivating, he also met a guardian of the power of light, who taught Eren how to use this energy.

After a long period of cultivation, Eren finally mastered the power of light. He felt that his strength had reached a new level, and he was ready to return to the battlefield to fight the Demon Commander again.

Back on the battlefield, Eren shows off his newfound strength. His body glowed brightly, and his attacks became sharper and more powerful. The dark energy was once again defeated, and the Demon Leader felt unprecedented pressure.

He realized that Eren was no longer the easy opponent he had been, but a real threat. The Demon Leader decided not to despise Eren anymore, and he unleashed more powerful dark energy in an attempt to defeat Eren .

Eren felt the dark energy unleashed by the Demon Leader, and he knew it was a tough battle. But he didn't back down, he firmly believed that his power of light could overcome darkness. He uses the skills and knowledge he has learned to engage in a fierce showdown with the Demon Commander.

The battle is fierce, with the forces of light and darkness intertwined on the battlefield. Eren continues to unleash dazzling light energy to crush the dark energy, while the Demon Leader continues to unleash devastating dark attacks in an attempt to defeat Eren .

Over the course of the battle, Eren gradually discovers that his power of light is not endless, and he needs to better control his energy so as not to run out of power. As a result, he began to learn how to balance the powers of light and darkness, and how to use the power of light more effectively in battle.

After a lot of hard work, Eren gradually mastered the art of balancing light and darkness. He learned how to wield the power of light in battle, and how to unleash more powerful attacks at critical moments. His fighting skills have become more proficient, and his power has become stronger.

As the battle progressed, Eren gradually found the weakness of the demon leader. He discovered that the dark energy of the demon clan was not endless, but limited. As long as he can consume this dark energy, he will have a chance to defeat the demon leader once and for all.

As a result, Allen began to adopt more aggressive tactics. He no longer dodged the attack of the demon leader, but directly stepped forward. His body was enveloped in dark energy and became more powerful. Each of his punches carried the power of destruction to everything, and smashed hard at the demon commander.

The Demon Leader was surprised by Allen's aggressive tactics, he originally thought that his dark energy was invincible, but he didn't expect Allen to be able to use it to increase his strength. He felt the destructive power emanating from Allen's body and began to feel uneasy.

Each of Allen's punches had a huge impact, and the Demon Leader was forced to keep back. He began to realize that his dark energy was being consumed, and a wave of fear welled up in his heart. Unwilling to accept the fate of defeat, he decided to launch a final counterattack.

The Demon Leader unleashed an even more powerful dark energy, forming a huge beam of darkness that shot fiercely towards Allen. Eren felt the threat from the dark beam, but he didn't back down. He concentrated all his strength and let out an earth-shattering roar, and his whole body radiated a dazzling light.

Allen's body began to change, his skin became crystal clear, and a divine aura emanated from his body. His fist smashed like a meteor into the beam of darkness. With a loud bang, the beam of darkness shattered, shattering into countless fragments.

The Demon Leader roared angrily, and his body began to emit even more intense dark energy. He decided to use his special move to summon the Dark Dragon.

A dark crack appeared in the air, and the dark dragon poured out of it. Its massive body obscured the sky, its dark scales glittering with a terrifying light. Eren felt the power of the dark dragon, but he didn't back down.

Eren gathered all his strength and released an arrow of holy light. The arrow of light pierced through the dark dragon's body with a loud bang. The dark dragon let out a terrible roar, and its body began to crumble, eventually turning into a cloud of dark smoke.

The Demon Leader looked at everything in front of him in shock, he couldn't believe that his dark dragon had been defeated. He felt the depletion of his dark energy, and his heart was filled with despair. But he was not reconciled, and he decided to fight his last strength and make a final counterattack.

The Demon Leader gathers the remnants of the dark energy to form a dark vortex. The dark vortex spun rapidly, unleashing a terrifying suction. Eren sensed the threat of the dark maelstrom, but he didn't back down.

Alan stared at the dark vortex, a strong determination welling up in his heart. He knew he had to overcome this final challenge or it would be all doomed. He concentrated all his strength and let out a deafening cry, and his whole body radiated an even more dazzling light.

Allen's body began to change even more drastically, his body became taller, and an incomparable divine power emanated from his body. His fist smashed into the dark vortex like a meteor.