Hello! Now I know that I might not have made this 100% like the original game buuuut...Who cares? Right? This is just what I would've thought would happen if both Avatars were in the game and choose which side to join. And of course that means that this Story starts at the point where they decide which side to join...With all that over and done with. Enjoy.

I Don't Own The Fire Emblem Series...If that wasn't obvious enough...

F!Avatar - Kamui / M!Avatar - Corrin / Xander - Marx ( Only this Chapter )

The Branching Point of Fate

'How could they...Make us choose...Why...Just Why!?' Corrin thought as he stood, with his counter-part, in between both forces of Nohr and Hoshido.

'T-this...is just too cruel...' Kamui started to shake as both of their families started to call out to them.

Kamui and Corrin fell into a limbo where all they saw was pure and utter darkness...It felt like an eternity until they both came to their senses.

Corrin showed a face that showed both sadness and resolve before taking out one of the last gifts from their shared homeland, the Yato blade. "..." And turned to Marx.

"C-corrin?" Kamui's mind shattered.

"Marx...Withdraw your troops...Please..." Corrin said in a almost desperate tone.

"...What?" Marx almost couldn't comprehend what he just heard. "Corrin, it couldn't be...You've decided to side with the Hoshido?"

Corrin slowly nodded. "I've made my choice...I decided to fight for the Kingdom of Hoshido!" Corrin stated for everyone to hear.

"..." Marx let out a sad sigh. "Corrin...I can't lie to the both of you...It's true that you both were originally royalty from Hoshido. But even though not a single drop of blood ties us together, I've always felt as if we were actual siblings...I'm sure Father and everyone feels the same way...So, come back to us!" Marx tried to reason.

Corrin shook his head. "I'm so sorry...but I can't go back there...I've already seen them, King Garon's despicable ways. The town was destroyed, innocents were killed! A-and...Queen Mikoto..." Corrin tried to keep calm.

"Corrin, please think about this!" Kamui plead.

"The Queen...Mikoto, our Real Mother, perished along side them.." Corrin paused before letting out a small depressing chuckle. "Hey...You said that Father shared the same feelings you all have about us. That Father considered us as Family, but if our mother hadn't protected the both of us...The explosion from the swords King Garon gave us would have killed us! If we were truly a part of your family, then he wouldn't have done such a cruel thing to us! To Hoshido! The King is truly Evil!" Corrin said angrily.

"W-what are you saying Corrin...Father cannot be evil!" Marx said shaking his head in denial.

"Brother!" Corrin called out. "Look at what at what he has done! To all of us, so please join us! So we can end all of this suffering! So we can all be together once more!" Corrin said hopefully.

"..." Marx said nothing...Only readied his sword.

Corrin lost his composure. "B-brother?"

Marx charged with a full intent to subdue his lost brother. Corrin was paralzed and instinctively closed his eyes, only waiting for the blade to open the way to the after life to join his Mother...But the sword never came...Only the sound of the sword being deflected was heard. Corrin opened his eyes to see that the sword was deflected by none other than Kamui...

"..." Kamui spun her sword, the Yatogami, and firmly planted it onto the ground.

"Kamui...You too...?" Marx said sadly.

"No..." Kamui said before turning to face Corrin and the Rest of the Hoshido. "Corrin, Brother...Call off your soldiers."

"W-what!?" Ryouma said.

Corrin shook his head rapidly. "N-no...No no no...Kamui...What are you doing?" Corrin said in pure confusion.

Kamui stared at the ground before speaking. "...I'm sorry...I can't fight alongside you."

Corrin tighten his grip. "Kamui why!?"

Ryouma nodded. "Please! Explain why! You've seen it, haven't you!? Both of you have! Their ways are horrible, disgusting! How they Murdered Mother! Overrun our Kingdom! Are they not our enemy!?"

Kamui looked up to see two faces of betrayal. "Yes, I understand...It isn't something that can be easily forgotten..." Kamui looked back to the faces of her Nohr family. "And I know that these people aren't my true siblings as well...But even so...I will side with the Kingdom of Nohr!" Kamui said with unshakable resolve.

"What are you saying Kamui! If you understand, than what is the reason to join them!?" Corrin said through his teeth.

"Corrin is right! You should be by our side Kamui! The side of light!" Ryouma added.

Kamui turned to Ryouma and shook her head slowly. "Brother...Everyone here has supported me since the beginning...I can't betray the family whom I spent my Life with."

"...!" Ryouma winced as Marx smiled gratefully at Kamui.

Kamui turned to Corrin. "And Corrin...I know you're smarter than that...You should understand what I'm trying to do..." Kamui smiled bitterly.

Corrin's knuckles turned white as he tighten the grip even further. "Kamui...You can't change a Kingdom that has already been corrupted! A poisoned plant in a garden will continue to grow until it is torn off at the core!"

Kamui's face turned to a frown. "And your willing to kill your own Family to accomplish that!?"

Corrin's gaze turned to a glare. "That seems to be what they're doing! King Garon almost killed us Kamui! I can't stand to lose anyone! And I most certainly won't lose you or anyone else to Him!"

"...But we did not hear that from Father's own mouth. We are simply assuming that! That could've easily been a trick to frame Father!...Which is why we need to go and find out for ourselves Corrin!" Kamui reasoned.

"And if it isn't!? What than!? We get captured and executed by our own Father!" Corrin retorted.

"They won't accept that! You know that Corrin!" Kamui said as she took a glance behind her before returning to Corrin.

"How would we deal with the fact that the people that raised us killed our own Real and Living Mother! Who we finally reunited with after all these years! We can't simply about forget this like always Kamui!...Not after what happened..." Corrin raised Yato.

"Please Corrin! Mother wouldn't have wanted this!" Kamui picked up Yatogami from the ground.

They stood silently for a few moments before Corrin decided to speak once more...

"...Kamui...Your path leaves too much to luck...To blind faith...Everyone we care about could easily be lost..." Corrin faltered slightly.

"Corrin...Your path guarantees that lost...All of this can easily be avoided...Changed..." Kamui said.

Corrin shook his head softly. "You can't prove that..."

Kamui let out a sad chuckle. "You can't either..."

Marx and Ryouma took Their sibling's actions as a signal to ready their weapons...

"...Ryouma...We WILL take our sibling back..." Marx said threateningly.

"...That is what we should be saying..." Ryouma said sternly.

Both Armies instantly did the same.

Corrin and Kamui looked at the scene with watery eyes...

"I wonder what Mother would've said..." Corrin said.

"...I want to remember her so badly...But because of us...She's gone..." Kamui said with a single tear.

"...And because of us...This happened..." Corrin turned back to Kamui.

"...If only...there was another way..." Kamui said sadly as she turned to Corrin.

"...If only we can make our own path..." Corrin smiled.

"...Where our path is clear and bright..."

"...A path were everyone can be together..."

"...But...There is no such choice..." Kamui got into a stance Corrin is all too familiar with.

"...Our Fates have been decided..." Corrin did the same...

Welp I am by no means an expert at writing, but I do hope you liked this to some degree. Of course I don't know fully what their Personalities are like since the Game isn't out yet...But I thought of an idea like this would come up eventually but became too impatient, for the better or worst. Than again this is most likely a one-shot...So Bye! Get ready for Fire Emblem : Fates!