As a Lucifer in DxD

Third person POV

While Cain was in Nyx's divine realm a lot was going on in the underworld.

The battle between Gerhard, Grayfia and Serfall was so big that it made Damaidosu think if they were devils.

Seeing that he retreated while leaving his army and the battlefield to Gerhard.

...

The tension in the battlefield grew as Gerhard Lucifuge faced his daughter, Grayfia, and her ally Serafall. The air of the underworld trembled with the intensity of their clash. Gerhard gripped his sword, a blade forged in the depths of the underworld, while Grayfia and Serafall summoned ice glaciers around them.

Gerhard's voice echoed through the frozen landscape.

"Grayfia, my daughter, you've grown stronger since our last encounter. Your ice magic has truly reached insane level."

Grayfia, determined responded,

"I won't let you get in the way of Lord Cain, father, even if it means facing you."

Serafall, her eyes gleaming with confidence, added

"You won't stand a chance against us, Gerhard Lucifuge."

The battleground became a place of icy death which was continuously slashed by Gerhard as ice clashed against the Right hand of the Lucifer.

Gerhard moved with the grace of a seasoned warrior, parrying and countering the relentless assaults of his daughter and her comrade. In the midst of their battle, Gerhard spoke again.

"Grayfia, Why dont you use your clan trait of darkness? You have very good potential. Embrace it, control it, and you'll reach new heights."

Grayfia, momentarily distracted, questioned, "What do you mean, father? I will lose myself if I use it more than this."

Serafall was not able to follow up with their conversation. She was totally focused on defeating Gerhard. She wanted this war to end as fast as possible.

Gerhard smiled, a mix of pride and sadness in his eyes. "It's not about succumbing, my daughter. It's about understanding. Darkness can be a formidable ally when harnessed with control. "

Seeing that Grayfia is unable to understand him, with a swift motion, Gerhard unleashed a wave of dark energy. Grayfia felt the resonance with that power in her. The ice glaciers around her intensified, blending with the newfound darkness. Serafall watched in awe as the battlefield transformed. Gerhard was taking control of their ice by encasing it in his darkness.

Soon Serafall and Grayfia started to fight back to get their control back on the ice and in the midst of that Grayfia hered her father speak 

"Grayfia," Gerhard's voice resonated in the battlefield, "control the shadows, let them fuse with your ice. This fusion will make you unstoppable."

As Grayfia embraced the amalgamation of ice and darkness, her attacks became more potent. Serafall increased her output to keep up with the shifting tides of magic. Gerhard, proud of his daughter's progress, continued to guide her.

"Your potential is boundless, Grayfia. Together, with Cain you can reshape the underworld. Furthering the legacy of the Lucifuges ."

Grayfia, "Father why did you join the satans, dosen't your loyalty lie in the clan of Lucifer."

Gerhard, parrying an incoming strike, replied,

"The world is not as simple as it seems my daughter. Sometimes, one must hurt someone to protect what they hold dear."

The battle reached its climax, the clash of ice, darkness and steel echoing through the Valefor territory. Gerhard and Grayfia faced each other, a momentary pause in the chaos.

"Father, I dont understand what you mean but I am sure Lord Cain would, until then it my job as his Lucifuge in assisting him." Grayfia declared.

Gerhard, accepting her choice, nodded. "That's my girl. Forge your own path, Grayfia, and remember, the shadows can be both a shield and a weapon."

The battle continued, but now Grayfia fought with a newfound determination and control. Ice and darkness intertwined, creating a formidable force that allowed Serafall to keep her peak output without worrying that Grayfia might lag.

In the end, as the eternal purple sky of the underworld hung over the battlefield, Gerhard couldn't help but feel a mixture of pride and regret, knowing that his daughter had chosen her own destiny.

...

While going back to Lucifaad after seeing the fight between the two sides Damaidosu Asmodeus was awe struck to the point where he doubted if those three were even devils.

But in his way back he met someone he didn't want to.

Zeaira Gremory had finally reached the Valefor territory. And to unfortunate luck of Asmodeus he met her.

Not to say much but just as he saw red hair from the distance he ordered his troops to run as fast as they can.

'I have no interest in checking out how strong she is.'

Damaidosu reached back to his base at Valefor town and stared preparing for defense but yo his surprise even though Zeaira was chasing him she wasn't able to reach him.

"Thank goodness!"

...

Zeaira was ambushed by Euclid on her way to capture Damaidosu. 

"Hmp, You lowly gremory. I have come today to kill you."

Euclid declared not knowing how strong Zeaira is

Euclid attacked her using his darkness power but she destroyed all of it and knocked him out with a single attack infused with her PoD.

Seeing that he was knocked out Zeaira decided to take him back to his father. Zeaira didn't want to kill him as she thought he was Grayfia's brother and Grayfia was Cain's maid.

But when she reached near the camp of the Lucifuge she saw all the soldiers staying there not on the battlefield.

Seeing that she left Euclid there and went to the place were the fight was going on. On reaching there she saw that the entire battlefield was a cold desert with temperatures going way below zero.

Serafall had used her strongest attack cross Celsius trigger covering the land into a frozen wonderland. On the other hand half of the sky was dark because of Grayfia.

But even after this Gerhard was not losing infact he was still pushing them back. He wasn't called the right hand of the Lucifer for nothing. Each strike of his sword would cut Serafall magic and separate the darkness of Grayfia.

Seeing that Zeaira created a sword of destruction and slashed. 

Sensing the immense attack heading towards them the combatants retreated hastily. It was the right decision. Zeaira's attack destroyed the darkness and ruined the frozen land.

Serafall and Grayfia were relived seeing that support has come as they were getting tired.

While Gerhard was shocked seeing the ridiculous power in a simple attack done by Zeaira.

Seeing that made Gerhard understand that the satans have lost this war. 

'And to think Grayfia says Cain us stronger than her while Ajuka is also there. There is no way the satan faction is winning this civil war.'

...

The entire battlefield was controlled in an instant by Zeaira but in the middle of this. Melan Beezelebub appeared with a crazy look on his face and started speaking like a madman

"All the lowly devils have gathered to die by my hands."

"Melan, have you gone crazy!"

Serafall said knowing how weak he was 

"Hahaha! You guys dont know anything, I have gained the power of the evil claws. Nobody in this world is my opponent."

Hearing evil claws Gerhard immediately got serious.

"Young Beezelebub, who gave you that power and where did you hear that name."

Melan in his high state ignored everything and only saw Gerhard questioning him 

"You a mere servant of the satans dare ask me, die!"

Screaming Melan began to transform into a giant fly chimera. This was the result of using his clan trait alongwith the malebranche's power.

Melan started to realese a deadly poison which was greenish purple in colour. Gerhard knowing that this was the doing of the other houses of lucifer went ahead to kill Melan.

But the fly chimera was insanely fast and swung its poison coated tail and managed to scratch Gerhard.

Gerhard was poisoned. He would have been able to dodge it but fighting two satan class devils at the same time for days without rest, even though he was not injured his fatigue had built up.

Gerhard knew that he wouldn't last long so he decided to atleast kill this chimera but it started flying towards the populated areas.

Zeaira seeing this said "Lord Lucifuge, please go back to your camp. Euclid is there. I will handle the fly chimera."

Saying so Zeaira spred her wings and went after the Chimera.

Seeing that Gerhard also decided that it would be for the best that he retreated and handled the houses of lucifer.

While Grayfia went along with him as Euclid in the underworld was a very concerning thing as Rizevim may also be in the underworld.

Serafall returned to her camp to have a talk with the troops and check on the other places.

...

"Looks like your plan was a success Scarmiglione." Barbariccia said 

"Indeed deputy leader. Now is the time to kill the devils."

Saying so the two awakened malebrnaches went towards the Valefor territory.

But after they went there a devil came inside with a cunning smil on his face. This devil was Zaorama Nebiros. 

"The foolish constructs dont even know anything. So easy to manipulate. Now let's begin my research."

Saying so he began to transport the remaining 10 malebrnaches into the underground facility he had built outside the territory of the devils and the Greeks. Making it impossible to find and retreated there.

But he made a mental note to check the battle between the rumored super devil Zearia Gremory and the Beezelebub descendant.

"Just a few decades more I will have a way to escape this world."

...

As the malebranche were coming they weren't hiding their energy signature so Gerhard and Grayfia sensed them coming and went to intercept them.

Grehard had drunk a phenex tear but the poison was too strong. It only reduced the rate of spreading.

By the time they reached there Serafall was also there. The two malebranche simply stood there and watched them.

Gerhard knowing what they were told te others

"Only try to defend yourself. Do not try to fight then because those things are the malebranche's mentioned in the history books."

Hearing that both Grayfia and Serafall got serious.

Gerhard went to fight Barbariccia knowing that he was the stronger one but was intercepted by Scarmiglione leaving Grayfia and Serafall to fight Barbariccia.

The situation was tense and Gerhard was poisoned. Grayfia and Serafall weren't ready to fight someone even the original Lucifer declared to be dangerous and sealed them.

...

500 years After the great war a devil was born, she floated in the air releasing the Power of Destruction which was so powerful even when she was a newborn, it could disintegrate or deform surrounding furniture and decoration without a trace. None of the doctors could touch her, except Venelana who held her daughter and asked her husband Zeoticus on what her name would be to which he replied, "Zeaira".

Zeaira POV

Being a Gremory I was always kind and loving to everyone. I treated even the common devils and mingled with them. 

When I was seventeen I used to play piano at the Gremory hall. Many children would join me and ask me question related to various things. I also sung them nursery rhymes.

I was happy with my life. I had inherited the PoD from my mother. My parents always told me to not reveal my powers my friends Ajuka, Serafall and Falbium were also told that.

But when I saw the poor Oriax heir being beaten by the Beezelebub heir I couldn't stop and ended up fighting him.

Thankfully Grayfia intervened and Shalba was stopped by Cain.

Over time due to my antics with Cain I fell in love with him. Due to this I started a choir in Lucifaad as a reason to go there and meet with him.

I also grew close with the choir group. After the satan descendants decide to start the war, Zekram came to me and ask me to join him, but I denied.

But the Beezelebub ordered his troops to massacre the common devils in Lucifaad who did not support them. When I heard of it I immediately went to Lucifaad only to find the corpses of the innocent children's who were in my choir.

I was about to go to the Beelzebub castle and kill all of them but I saw a huge explosion in the forest. Cain returned and saw me sitting on my knees falling into despair near the town post.

He came near me and didn't say anything or tried to console me but simply hugged me. That day I cried for the first time.

"Cain did they die because I didn't support the rebels?"

I was sobbing but he replied "This would have happened regardless."

Hearing that I knew that the satans were not necessary for the devil race. After that I joined the rebel faction. I also asked Ajuka to join. I persuaded Falbium to join and he did.

I am going to end this war so no more innocent children will die.

Here I stand infront of Melan Beezelebub who had transformed into a chimera. He was going to a populated area but I wouldn't let him. No more innocent devils will die.

...

Third person POV

Zeaira faced the giant fly chimera, her body covered with the PoD. As the monstrous chimera loomed before her, she channeled the clan trait she had inherited.

However, to her surprise, the creature resisted her attempts to obliterate it.

"No... this should be enough to shatter mountains," Zeaira muttered, frustration evident in her voice. 

Each strike she delivered merely glanced off its tough exoskeleton.

Gritting her teeth, Zeaira muttered, "Stubborn beast, isn't it?"

The chimera buzzed menacingly, its multiple eyes fixated on her. Unwilling to back down, Zeaira channeled more power into her destructive aura, intensifying the red aura that surrounded her.

As the battle raged on, Zeaira's frustration grew. The chimera seemed immune to a large part of her abilities. In a moment of realization, she understood that conventional methods wouldn't be enough to overcome this adversary.

'I can destroy it if I use more of my energy but the poison would spread and kill the people in the populated areas.'

Thinking so Zeaira decided to get rid of all the traces of poison alongwith the chimera. With a determined resolve, she tapped into the depths of her abilities, calling upon her true form—the incarnation of pure destruction.

AN:- The weekly chapter. 5th chapter in seven days. And give those PS!!!

Bonus chapter at 169 power stones.