The fifth chapter of "Fire vs. Ice". Enjoy!

The two mages clashed but Natsu was stronger and sent the dark ice mage crashing towards the guild door.

"Damn you! You're gonna regret that flame brain! Ice Devil's Zeroth Destruction Bow!" Gray creates an intricate bow made of ice and charges it with an ice arrow that is fired at the fire mage at high speed. Once the arrow makes contact with Natsut, it turns into a spiky array of ice. But Natsu was able to melt the fire using his Dragon Fire.

"Stop it Gray! What the hell are you doing!" Erza yelled out.

"Stay out of this you bitch! This is between me and that pyro bastard!" Gray yelled back while showing his demonic arm.

"What did you just call me?"

"You heard me. Bitch. I'm not the same Gray you knew. I'm more powerful. Aside from getting revenge at what Natsu did, I'm gonna get revenge on you too! For all the times you threatened me with your magic. For all the times you used your power and beat me to a pulp! Once I kill Natsu for stealing what is mine, I will kill you! You got that?!" Erza felt just a little guilty for using her magic to beat both Natsu and Gray back when they were kids up until now, but realized that this wasn't the time for that when she saw the killing intent that Gray had in his demonic eyes.

"Natsu. What is he talking about? Why does he want to kill you?" Erza asked after requiping to her Flame Empress armor.

"Simple, he is after Lucy. He is going to try and take her by force." Natsu stated while igniting his fists on fire. When everyone heard this, the members of the guild whispered to one another trying to figure out what was going on.

"What do you mean he's after Lucy?" Erza asked.

"Gramps and I will explain it to you later, all you need to know right now is that she is in danger! We…I need to protect her from this bastard!" Natsu said while looking at Erza with a serious look on his face.

"Gray is this true?"

"That's right. Now where is she? Where is my Lucy?" Gray demanded.

"First of all, she is my wife! Secondly, she is somewhere where you can't find her. I won't tell you where Lucy is to a traitor like you! Fire Dragon's Wing Attack!" Natsu rushes forward against the ice mage. While doing so, he produces a large stream of fire from each of his arms, which, when it comes in contact with Gray, burns the mage of Avatar and at the same time sends him flying away due to the blunt force of the produced fire. Gray however manages to dive back down and made his move. His arms began to glow a dark blue.

"Ice Devil's Hell Blizzard!" The ice mage swings his arms and creates several ice shards that are shrouded in snow so it looks like it is a blizzard.

"Pyro Tsunami!" Erza swings her sword and creates a powerful fire tornado that melts all the ice mage's attack. He lands on the ground and creates a sword made of ice.

"That's how you want to play huh? All right then! Take this Titania! Ice Devil's Zeroth Bringer!" This attack is a combination of Gray's Zeroth Long Sword and Ice Bringer. He creates two giant ethereal swords in his hands and charges at both Erza and Natsu. Gray however was stopped when Natsu took off his bandages, which reveal the mark of Igneel, and fired a powerful fire fist attack.

"Fire Dragon King's Demolition Fist!" Natsu charges his fist for a brief moment, releasing a large quantity of flames in the process. Afterwards, he punches the ice mage in the chest, dealing massive damage to him and sends him flying all the towards Kardia Cathedral.

"Erza!"

"Right!" The two mages go after Gray to finish the fight, Makarov was about to follow but was stopped by Mira.

"Master, what is going on? Why is Gray doing this?" Makarov turns around and sees all the members have a face saying 'We want answers!'.

"Everyone, there's something you need to know. I'll tell you everything but let's wait until Erza and Natsu get back." Makarov said with a grim face.

At Kardia Cathedral

Gray was trying to get up after crashing into Kardia Cathedral, but his injuries were too great, the fire mage has put him out of commission for awhile. That was when Arlock showed up out of nowhere.

"It seems that Salamander has beaten to you."

"He had help from that red haired bitch! I just need my devil slayer magic to heal me so I can kill that pyro bastard!" Gray exclaimed as he used his Ice Make magic to produce ice that he can consume and regenerate.

"Very well. For now we must retreat. Our forces have been destroyed by two guilds. Sabertooth and Lamia Scale."

"Fine!" Arlock teleported the both of them back towards their guild just before Natsu and Erza got to the cathedral.

"Dammit! They got away!"

"Natsu, start talking. What is going on?" Erza said after requiping back to her normal armor.

"Gramps said that he will explain it to you if we saw Gray. So let's go back to the guild."

"Ok." When they reached the guild, Makarov went and explained it to everyone (including Lucy and the others at Porlyusica's home). All the members of Fairy Tail took it pretty hard. Lucy was distraught to hear that Gray was after her, for what reason she had no clue.)

"I got it!" Natsu said.

"What is it?" Makarov asked.

"Gemini! We can have Gemini to transform into Lucy to draw Gray out! Gemini, what do you think?" Natsu asked Gemini over the Lacrima Crystal.

"It's actually a good plan." Gemi said.

"Gemi and I will pretend to be Lucy in order to draw out the traitor. Once he 'captures Lucy', you can track us down with tracer magic and find Avatar's base of operations."

"That's actually a good plan Natsu, Gemini, how long can you hold the transformation?" Makarov asked.

"Thanks to his majesty, we can not only stay in Earthland without having to go back to the Celestial World, but also stay transformed for a long time."

"Good, then Gemini, we need you come here so we can proceed with the plan."

"Ok." Gemini first went back to the Celestial World and reappeared at the guild. He then transform into Lucy, using the outfit she had during the dragon war.

"Ok, Natsu, you, Yukino, Erza, and Gemini will meet with Sabertooth at their guild since the information from Mest revealed that the Avatar guild, which is located in the Mikage Forest, is near their guild."

"Got it."

"Understood."

"I will contact Gildarts and have him meet you at Sabertooth. Everybody else, we will meet with Lamia Scale who is in position near the Mikage Forest. The Avatar army will send another army to attack so while we attack the army, the assault team will attack the core members of Avatar. Is that clear?" The whole guild yelled in agreement.

"We will leave tomorrow so get plenty of rest, you're going to need it!"

NIGHTTIME AT PORLYUSICA'S HOME

Natsu decided to spend the night with his wife to feel at ease. He was afraid that the ice mage would find her and his daughter.

I will protect you Lucy, Nashi." He whispered before falling asleep. He failed to see that Lucy smiled in her sleep and gripped his scarf.

AT THE AVATAR GUILD

"Well Gray, it seems you failed." Arlock said while reading the Ice Devil Slayer Book.

"I thought for sure that with all the magic attacks in this book you would have been able to defeat Salamander, or even Titania for that matter."

"They got strong. I'll tell you that. That flame brain has a tattoo on his arm, so I'm assuming that he received it from Igneel, just like I received this Devil Tattoo from my dad. Erza however, I can deal with her no problem. Now that I'm all healed up."

"Very well. Just make sure you defeat Salamander this time."

"I intend to." Gray said with a demonic voice, half of his face all black with a red eye.

That's the end of this chapter! Hope you liked it!