Reader POV

I woke up on the ground next to Nozel.

His eyes were slowly opening.

"YOU'LL NEVER DEFEAT ME!" Dante was shouting to Yami Sukehiro.

"(y/n)!" Mimosa shook me awake.

I slowly sat up. Nozel and I were back in our normal clothing- as if we never did the deed.

"I'm alright," I smiled at the plant-mage. "And I'm ready to kick ass."

True to her word, I saw Rina fighting alongside my comrades.

The Dark Triad and Disciples were calling her a traitor and other horrible names.

Not only that, but I could feel a burst of magical energy.

My grimoire floated in front of me and I read the spell.

Grand Mana Zone.

The spell had to be fueled the right way.

Since love is the most powerful magic over loyalty, hatred, glory, and anger, I would have to use pink ice with the spell.

Grand Mana Zone could be used with any of my ice, but it had to be powerful.

Not only that...

"ASTA!" I shouted.

Asta was in the air, fighting alongside Yami Sukehiro against his father.

"Extend your anti-magic to me!"

He nodded. "Yes, (y/n)!"

Nozel was now recovered.

My legs felt as if they were about to collapse, but I had to ignore the pain for now and fight to the end.

Asta nodded to Yami and he flew down to me. He placed his demon-dweller sword on my collarbone and a huge magic circle showed up and crumbled.

"At last..." A soothing voice said. "Mistress (y/n). I am your devil, Sofia. Command me."

I knew that I would have to combine my Arctic Fox Spirit Dive with a devil's magic.

"Ice Magic: Arctic Devil Dive."

White devil's horns appeared behind my fox ears and my nine tails had a deeper blue to the tips and white devil's wings appeared on my back.

You know the spell.

I took a deep breath. I would have to first set the stage in order for my spell to work.

Hundreds, if not thousands, of mages fought in the air, land, and water nearby.

My plan of surrounding the Spade Kingdom seemed to be working.

I cast out my senses and could see how our forces were moving the soldiers of the Spade Kingdom closer to the capital where I was.

"Ice Magic: Ice Queen's Love!"

A huge surge of pink ice knocked opponents out of the sky in the surrounding radius of fourteen miles.

"What the-"

Rina smirked. "I knew you could do it, (y/n)! After all, you two gullible idiots love each other so it seemed my theory was right."

"What theory?" Noelle asked as I joined her in the sky.

"You'll know soon enough,"

Then she saw the marks on my neck. "Oh. I understand now."

"Not now, Noelle. Tease us later. We need to first dismantle that tree," I said. "The energy they sucked out of me early is charging that monument. If not, this world will be overrun by devils."

Asta beside me finally understood. "I will be with you every step of the way, (y/n)."

I nodded to my cousin of sorts. "I'm counting on you, Asta. We both how the powers of a devil now."

"Be careful," Nozel grabbed my hand as his silver eagle wings flapped in the cold wind. "I'm not losing you, damn it!"

I kissed his hand and flew off with Asta.

Nozel POV

I watched the two devils fly into the sky.

Yuno joined them.

This was no longer a battle between kingdoms - but a battle between blood-related mages.

"I'll go-" I stopped the other captains from joining them.

"No."

Charlotte looked at me with confusion. "Nozel, that's-"

"Let them fight," I said. "The rest of us need to focus on getting innocents out and other mages! I already know the spell she is going to use. If it is combined with their magic, the devastation will be massive- unless we get everyone out. Now."

Finral and Langris shared a grim look and nodded.

"Everyone, we have made portals for you to use! For those of you who are weakened, others will carry you out!"

Nine portals appeared.

"Evacuate now!"

Reader POV

"We need to combine our magic!" I said to the two cousins of mine.

They nodded.

"Right!"

"Together now!"

"COMBINED MAGIC: BLACK SPIRIT GRAND MANA ZONE!!!" All three of us aimed as much magic as we could at the tree.

At first, everything was silent.

Then everything exploded with a huge boom.

"WHAT'S GOING ON?!"

The Zogratis siblings felt searing pains in their chests.

The three of us kept attacking the opponents who weren't carried through the portals.

Nozel had his arms out, aiming spells at opponents who tried to attack Finral and Langris.

He looks as if he's fit to be the Wizard King, Sofia said inside my head. Might as well make sure that happens, (y/n). Use the spell.

Grand Mana Zone was a small percentage of the spell that I was capable of producing.

It was the final spell that my grimoire had.

My grimoire was now so big now.

It was filled with various devil-ice magic spells, spirit dive spells, and so much more.

There were three grand magic spells.

Ice-Sphere of Eternity.

Ice Breath of Sofia.

And finally, the most powerful of all.

Ice-Law.

But I had to absolutely concentrated.

Ice-Law was one of the most massive spells ever to be used.

Legends said that the last time it was used, it was to seal the demons in Hell for eternity and it was used centuries ago, by Nordicis.

As if sensing what I was about to do, Asta and Yuno nodded.

"We're ready to end this once and for all," they shouted.

I took a deep breath to calm myself down.

If I messed up this spell, it would mean that not only the end to the devils but everyone. The whole landmass of Cardia would be plunged into an eternal ice storm forever.

I nodded to them and we joined hands and floated in the air in a circle.

I made sure the last person besides the Dark Triad and Dark Disciples were gone.

I cast out my senses and could see that they were all in the Heart Kingdom, under the protection of Queen Lolopechta and Diamond mages Mars and Fana along with the rest of the captains.

"COMBINED MAGIC: ICE SPIRIT'S LIABLE TEMPEST BLACK DIVIDER LAW!!!!"

Ice-Law is much like a foreign country's Fairy Law. It aims the most powerful attack at the opponent(s) the caster sees as an enemy.

However, it has never been recorded to have been combined with spirit magic or devil's magic.

It was the very first time anyone would ever do this.

The clouds swirled and a huge magic circle that was an ombre pink, green, white, and black appeared out of the sky and four subcircles each their own color appeared and they moved fast.

"To the end," I hugged the three of them. "Ice Magic: Ice Sphere of Eternity."

This defensive magic would keep us safe from any and all attacks.

"HOW IS THIS POSSIBLE!" The Zogratis siblings shouted.

They tried to stop the spell from launching, but their efforts were futile.

3rd POV

Some say from across the sea, in the distant lands of Ishagar and Alvareth, they could see a huge multi-colored spell in the sky.

When the spell hit, it created a huge explosion and shook the world.

Buildings crumbled and the portal that the tree had made that lead to Hell was sealed forever.

The three Zogratis siblings were stripped of all of their power and when the blast ended, the smoke cleared.

Some in the sky say that they could faintly see three figures- an ash-blonde, ravenette, and (h/c)-haired female were holding their hands in victory to the sky.

The Zogratis siblings were on the ground, knocked unconscious.

The devil-summoning tree was gone forever.

______

I realize that my battle-scenes aren't exactly the best, so I'm practicing.

I'm predicting this story to be 30-ish chapters, but we'll see.

Maybe they'll be more, maybe they'll be less.