Yin-Yang Harmony System

Boom!

The stream of flame surges out of his feet, giving him a powerful boost in speed. The ground beneath him exploded as he dashed towards Luke.

Luke also got the intention of Mantle and stomped his foot on the ground. His ninth rank soldier realm was revealed when he dashed towards Mantle. He held the sword in his hand and stabbed it towards Mantle.

"Roar of Dragon's Sword"

The moment the sword pierced the air, his ability energy erupted into his sword. The dragon resonated from the sword and the sharpness of the sword increased. When the roar came out in the form of a dragon, the sharpness of the sword covered the entire body.

"Wall of Flames"

Suddenly, the flame spiraled around him turning into a huge cylinder of flame. But, the Mantle spreads his arms followed by the cylinder of flame. It opened from the backside and slowly changed into a thick wall of flame.

When the wall was completed, Mantle pushed his arms on the wall of flame to support it.

Boom! Boom! Boom! Splash! Splash!

'Damn! How could this guy reach the ninth rank in such a short time? Even with his help, I barely reached the eighth rank. Can I even defeat him?' When the dragon collided against the wall of flame, it exploded into pieces, accompanied by a wave of sound.

Unlike normal sound waves, this one was made with the sharpness of a sword. The sound wave carried hundreds of small swords sharpness, piercing through the wall of flame. But only part of it successfully reached the other side, piercing Mantle's skin.

The blood gushed out mantle as he doubted his own progress. But suddenly, a powerful determination rose from his eyes as he murmured "No, I can't be defeat here. How can I lose to someone like him? My fate has changed. So, I must change myself."

"He is a demon, right? Then, I will become a devil."

Bang!

Suddenly, Mantle kicked his feet on the ground and rose up in the sky. When he rose up, he covered his body with a thick red flame. This flame was slowly sunk inside his body, reaching out to every cell in his body.

"What is he doing? Why is he sucking his own flame?" Luke was calm against Mantle since he believed in his realm and innate ability. Both of them were one level higher than Mantle. So, he patiently waited.

"Oh! He is going for that." Harry swings his sword and slashed it at Mike as he saw Mantle's action. Thick green energy released out his hand in a crescent shape, dashing towards Mike.

"Ultra-Sonic Punch!"

Mike condensed the brute strength on his fist and smashed on the air. The ripples of air emerged followed by the shrilling cry of a dragon. The sound waves coming out of his fist head straight towards the crescent slash from Harry for a collision.

Boom!

"Good boy! He has only joined the family for a week and he has already mastered the basics." Daniel glanced at Mantle's whose flames had completely compressed inside his body. But suddenly, he felt something was wrong.

The bloodlust and screams of thousand ghosts were emerging from Mantle's body. The entire surrounding turned gloomy filled with evil laughter. At this moment, Daniel's eyes widen "How could this be possible? How can he awaken Will when he is already under Demon King's rule?"

"No wait, he is not going against Blood Demon King's Will rather awakening something that complements Blood Demon King's Will. Is this the reason why he was chosen even though his talent and background were complete trash?"

"Blood Demon King's requirements are Talent or Background. He can improve one's talent as long as they can support him financially. Otherwise, his first priority would be Talent. I was wondering why this boy got chosen by him. So, this is the reason huh! I guess, Blood Demon King really likes to bring geniuses under his leadership."

"Still though, I don't think he can manifest the Will properly. This fight will decide whether he is good enough or not." Daniel murmured in the low voice. But his face was flashing with excitement and amusement.

At this moment, the flames around Mantle's had completely disappeared. His body has compressed the flames and his heartbeat was pounding hard. Mantle looked at Luke and said "You and that bastard used to bully me and my little brother. Why? Just because you were jealous?"

"Your family were a group of trashes. They were barely feeding themselves. So, when you saw someone living a better life and showing off their wealth, you two started retaliating using your strength. But now, I no longer hold the grudge about something like that."

"Now, I hate you guys because I had to kill someone precious to me just to live and kill you. But I also have to thank you. Because of you, I was able to awaken the devil hidden inside of me. I will use the power that this devil has bestowed upon me to clear that grudge."

"Luke, this time let's settle our feud. After killing you, I will kill that bastard with my own hands." Mantle slowly landed on the ground and spoke.

"Unfortunately, you are not good enough." Luke slowly unsheathes his sword and spoke without any trace of emotions on his face. He held his sword tight because he felt Mantle's strength has changed.

"Then, you shall see whether I am good enough or not." Mantle spoke with a cruel smile on his face. His eyes hid the killing intent. And, slowly the flames burst out of his body. But this time, it was no longer a red flame rather a dark purple flame.

"Awakening of Devil's Flame"

The grimdark purplish flames made him like a devil bathing in flames. When the flames transformed, his strength underwent a major temporary improvement.

Whoosh!

The moment he dashed forward, he felt the shadow of flames from behind. He was moving faster than his previous speed with causing less damage to the ground. He lifts his right hand, and a flame emerged out of it.

The dark purple flame spiral in the shape of a cylinder. While the cylinder was spinning, he pulled his hands a little and suddenly pushed his hand towards the cylinder. When his palm collided against the cylinder, the cylinder thrusts forward with a great speed while spinning.

The speed caused the cylinder front to change. The circular edged transformed into the triangular peak. When the tip was formed, the cylinder speed reached even higher.

"Wicket Nail of Death"

Whoosh!

"I guess, I have nothing to hold back now!" Luke released a deep breath upon seeing the attack coming his way. He held his sword tight and rushed towards. When he was just in front of the nail, he stopped his body and spun with his sword.

The Heavenly Dragon Sword in his hand creates a powerful hurricane that smashed against the Nail. But the moment, hurricane emerged, he tightly gripped his sword. The ability energy condensed on his sword.

He took a deep breath with his eyes closed while the hurricane was still colliding against the Nail. When he opened his eyes, he positioned his hands near his stomach holding the hilt with both of his hands.

"Great Dragon Chop!"

Whoosh!

When the intense blue aura erupted out of his sword, he dashed forward and slashed through the hurricane. The hurricane was already pierced by the nail and the sword slashed exactly above the nail. The intense blue energy was released in a crescent shape.

Boom!

The sword energy collided against the dark purple nail and creates a massive shockwave. This shockwave spreads around, slashing rocks and building into pieces. At the same time, the dark purple flame was burning around Luke.

"Devil's Flame- Fire Fist"

Suddenly, Mantle appeared above Luke making him startled. The purplish flame condensed on his fist and he smashed his fist towards Luke. His fist released a powerful stream of flame in the shape of a fist, covering ten meters in width.

"Heavenly Dragon Stance- First Form"

"Frenzied Wind Blades"

Luke didn't dodge rather he lifted his head up and held the sword tightly in his hand. The ability energy emerged out of him, fusing with his sword. He stomped on the ground and moved towards the fire fist.

Suddenly, his hands moved. The speed was unnoticeable by the naked eyes but when he stopped, several wind blades emerged. Some had crescent shapes while some were straight, some were even circular.

But each wind blade was formed from the sharpness of his ability energy and sword.

Boom! Boom! Boom! Boom!

Upon colliding against the fire fist, it severed the flame into pieces. But the wind blades still remained and moved towards Mantle.

Splash! Splash! Splash!

When the wind blades strike his body, dozens of cuts were made in an instant. His body started bleeding heavily. But Mantle didn't care about it. He released his dark purple flame while Luke was in the air.

His flames covered both of them and slowly formed four giant nails in each direction. Each nail was condensed with dark purple flame with the thickness of his own body and the sharpness of Luke's sword tip.

"Death Nails from Four Directions!"

At this moment, the ability energy released out of his empty left hand. The ability energy slowly condensed a sword just like the sword on his right hand. He held both swords and glanced at four nails in four directions.

In mid-air, he was slowly falling down. So, he rotates his arms with full strength in his muscles creating a giant tornado that helped him float. The giant tornado was made off the wind manipulated by his sword, containing its sharpness.

"Heavenly Dragon Sword- Second Form"

"Black Dragon Hurricane"