So I was writing some more of my other story, Dawning Pantheon when this just suddenly popped into my head, I couldn't tell you why. Regardless, I hope this is interesting enough as it's the first crossover between these two franchises. And as such, I do not own Avatar or Fate/Stay Night or any of the variants, this is purely fan made.
Enjoy.
"Heroic spirits, who have saved mankind time and time again, please answer my call and become my servant!" I finished and called into the dark room, illuminated by only the glow of the summoning circle beneath me.
Silence... Absolute silence. Did the summoning not work? If it didn't work I'd be a disgrace to the Tohsaka name. Please, no, this can't be... no. No. NO! I ran up the stairs to the living room of what was essentially MY house.
Slamming open the door I looked around, everything was in order. My heart sank, I had failed to summon a servant for the Holy Grail War. I felt tears well up in my eyes, and grabbed the nearest thing, which happened to be an unfortunate candle stick, and threw it with all my might in the the opposite wall with a scream. Only then, did I notice the red markings on the back of my hand...
"I'm... a master? I'm a master!" I jumped excitedly, totally forgetting that I had unjustly murdered a candle. "But... where is my servant?"
My answer came in the form of a quiet, vicious sounding hiss and what sounded like a the creaking of a bow being drawn.
"What the... AAAGH!" An arrow hit me in the right shoulder, launching me into the wall to the right of the basement door. The pain was excruciating, but what was worse, as that my arm was starting to spasm.
'Neuro-toxin' I deduced quickly, my head screaming in response to the pain. I heard the bow being drawn again and I did the first thing that came to mind.
"BY THE POWER OF MY COMMAND SEAL!" I yelled, unable to lift my arm, I continued, "I command you to drop your weapon and show yourself!"
A bright red glow from my hand signified the activating of the command seal.
The sound of hissing grew louder and I heard the distinct sound of a light wooden bow being dropped on the floor.
"I... will... KILL you..." A voice spoke, but it wasn't in Japanese, I could tell.
My arm had since stopped twitching and now I could feel my breathing becoming harder, but I caught the glimpse of something just before I felt myself black out. Out of the dark corner of the room, a... blue? Yeah, definitely blue, body crawled its way into view, the head was covered in hair as dark as mine in an uncountable number of small braids with one long on one that draped over her left side and onto the ground. A light brownish loin cloth could be seen barely viable in the darkness of the room, and she had what looked like a LARGE knife strapped to her chest. At least... I think it was a she... All I could see now was darkness and I felt my breathing getting heavier and heavier.
"This is it huh?" I whispered very softly. "Well... at least I did one thing right..." I trailed off as I lost consciousness.
I woke up in my bed staring at the ceiling. I tried to move, but realize I was tied down by something. I lifted my head and immediately got a splitting headache, but gritted my teeth and looked around. MY room was a disaster, wardrobe and chest were broken and clothes hanging from open doors and drawers.
I turned my head about 90 degrees and came face to face with a blue skinned woman, fangs out... wait... fangs?
"Who...? Who are you?"
"Demon." The woman said, her voice thick with an accent I didn't recognize.
"Why am I... not dead?"
"Poison, natural resistance." she said looking away. I took note of the very colorful arrays of beads in her hair and around her neck.
I winced as my head throbbed, and lied down flat and stayed there.
"Eywa, what has happened to me? I need your guidance."
There was that weird language again.
"...What?" I asked not moving.
She gave a loud hiss. "Silence demon."
"Look. you clearly don't like me, but at least hear me out." I saw her ears, pointed ones, fold back out of the corner of my eye and she whipped around to look at me.
"You do not listen." She said threateningly.
I sighed... what should I even say, if anything? She obviously hates me right now, but I don't understand why. Who is she?
She sat in silence with her eyes closed and didn't move at all for a solid five minutes, as did I.
"My name is Rin Tohsaka," I finally said.
She didn't respond.
"I'm your master in what is known as the Holy Grail War, but you clearly don't like me so far. Mind telling me why?"
"Stolen... from my world," she spoke slowly.
"Stolen?"
"Yes."
"Where are you from?" I questioned.
She squinted in confusion but answered after a second. "Pandora."
"Pandora, where's that? Never heard of a place like that."
"Different world."
It was my turn to narrow my eyes, confused. What the hell did she mean by that? Does she mean another planet? That'd be impossible, we know that as of now, no life exists outside of Earth. Then again, her skin was blue, and it didn't seem painted, she had canines, and... a... TAIL?!
"You... have... a tail?"
She nodded.
"You're not from Earth... are you..." I said more factually than questioningly.
She tilted her head to the side slightly, and then shook her head softly. "No."
It was in that moment that I realized, I had an alien for a servant.
We sat in silence again, me processing the information and she doing... whatever she was doing.
"Neytiri." She said abruptly.
"...What?"
"Neytiri... is what I am called." She said finally turning back to face me.
"Nay.. teary?"
"Neytiri!" she yelled, obviously annoyed at my pronunciation of her name.
"Sorry."
"You will learn. Fast."
Deciding to change the topic slightly, I asked, "What class of servant are you?" Deep down I was praying she would say Saber, but I already knew what she was gonna say.
"Archer... I think."
Yeah, I figured. Speaking of which, I had an arrow in my shoulder, what... where is it? I went to flex my arm only to cry out in pain as it all returned to me.
"Do not, move..." she said jumping to her feet and turning towards me, her tail swinging behind her. "Great damage, need to rest."
"I could heal myself, if you'd untie me," I managed to say through the pain.
"No."
"W-Why?" I asked dumbfounded.
"I do not, trust you, yet."
I didn't really have a retort to that, so I decided to stay quiet and resist to urge to snap at her as I do with almost everyone else when I don't get my way.
"You are like child." She insulted.
I gave her a look of confusion. She simply brought her right hand up to her ear and held it there.
"Connected... ways I do not understand."
It was hours before she let me out, and also only did after I let her bandage me up with actual medical supplies instead of creatively using my undergarments and shirts. This lasted all of five minutes before I finally just healed myself.
Now that I could move freely and not be in pain, I sat down in the living room with her on the sofa and me in a chair across from her with about 15ft (~4.57m).
"Just so you aren't confused or scared, Ney... Neytiri," I said, still trying to get her name correct, "the grail has given you knowledge of our language, loose customs, and the city, along with your class specification and such."
She nodded silently.
"As a servant. you listen and follow my orders," she bared her teeth at that, "...and I understand you aren't happy about it. Please understand that this is how it works, but I will try to grant you as much freedom as I can."
She hissed quietly but seemed to accept it.
"One thing that isn't avoidable is conflict with other servants and masters. When that happens, I need you to listen to me whether you like it our not. I will let you fight the way you would like most of the time, but in some cases, I will require you to do things my way, understand?"
Again, she nodded, but this time more reluctantly.
"Now then, any questions? Or can I ask you some?"
She sat quietly and glanced around in thought.
"Are you... okay... master?" she said, spitting master out at the end like it left a vile taste in her mouth.
"Yes, I'm fine now thank you. And please call me Rin, master is too formal and it's clear you don't like it."
"Very well." I swear she smiled ever so lightly at that.
"Now... who... are you Neytiri? Like, what are you and what were you in your life?"
She pondered this for a minute before answering.
"I am of the Na'vi, Omaticaya tribe, I am the princess of the tribe."
"Excuse me... 'am'?"
"I am still living, yes."
"No no, I meant, when I summoned you... were you... still alive?"
"Yes."
That shouldn't be possible, you should only be able to summon dead heroic spirits. This leads to question two, HOW is she a heroic spirit anyway?
"What else can you tell me about yourself?" I asked, now more interested than before.
"My body is different."
"What do you mean by that?"
"Na'vi are much larger than you. I am unsure why my body has shrank, along with my belongings."
"How... big are you?" Wow Rin, nice wording.
Neytiri didn't seem to understand the second meaning of that phrase and stood up. Summoning an arrow, a simple wooden shaft with yellow frills instead of feathers, and a stone arrowhead, she looked up and, to my horror, stabbed her arrow through the ceiling and into what would be my parent's room, if they lived here.
"Where the arrow ends." She said looking back down at me.
Based on the size of her arrow I deduced that she was actually about 10ft or so tall.
"Wow."
"I am curious to know if Seze has been shrunk to match me.
"Who's Seze?"
"My banshee."
...What?
