It had been six weeks since you were assigned to the Spectrum, and during these six weeks it had been a bit chaotic. You had been thrown around as a drop-in substitute for many tasks going on throughout the place, tending to anything from machines, to helping run tests on the various creatures on board. Today was going to be rather interesting, although you didn’t know that yet. The Reserve had recently acquired a male Amtsvane, and you had been the lucky human assigned to him. What you weren’t prepared for was the immediate reassignment to a Reserve destroyer, specifically the Harbinger. You would soon learn why as you found out the size of the Amtsvane itself to be forty-eight feet tall. You would also learn that his name is Zalik, and for some reason, he already liked you a lot despite having only just met you, weird. Anyway, you were issued a new uniform and giving a sidearm. You suppose it made sense since the Harbinger is a warship after all. The crew on board would leave you alone with the large beast and the two of you would get to chatting. 
“So…” You would trail off, truly grasping just how big he is. “Hmm?” He would move closer to the catwalk you currently stood on. He reminded you of a lizard, but a very large one that could take on a kaiju alone. He had spikes running down from the back of his head to the tip of his tail, and two headspines, tealish green in color. He was a sort of spruce green in color with his underbelly being lighter than his back. His eyes were a pleasing yellow gold. You were so zoned out that he had to lick you to get your attention, which ended up startling you a little. “Apologies tiny, but you didn’t seem to be hearing me. You gulped at him calling you tiny, while you suppose it was true, you weren’t prepared for him giving you a nickname already. “Y-yeah. Anyways, I’ve been assigned to you… but they didn’t tell me what I’m supposed to even do.” You took a deep breath, trying to steady yourself. “Well, just hang out, relax even. They didn’t tell me anything either, tiny. I’m just as clueless as you.” With that, you would attempt to relax, sitting down and idly chatting with him.
A couple hours later, and you somehow ended up sitting on top his head, as he was laying down on the hanger bay floor, seeming rather bored. You got an idea, and after having a holoprojector brought down, the two of you could watch some movies. Midway through the third movie, the whole ship rocked violently, as a distant explosion could be heard, followed by alarms blaring throughout the ship. Before you could react, another explosion rocked the ship, this one being a lot closer, and suddenly the gravity went, as the two of you were freely floating. What you didn’t know is the entire hanger bay had detached from the ship and was currently falling towards the ground. Thankfully, the ship had been within atmosphere when it was attacked, but you didn’t know that. Suddenly gravity came back, and you held on for dear life. You would be knocked out upon impact.
A few hours later, you would wake up to see Zalik nearby, as the two of you appeared to have crashed down on a beach. You managed to stand up, but your leg was sore and possibly broken. With a limp, you made it to him and saw he was first surprised, then relieved that you were alive. “Well, I’ll be. I didn’t think you survived that crash, tiny.” He suddenly picked you up and hugged you. You’d do your best to hug back, despite him being a lot larger. With this, you also found out your arm was broken, and let him know of your current injuries. “Don’t worry tiny.” He spoke as he set you down. “I recognize some of the plants nearby, I can use them to help heal your injured arm and leg.” With that, you just lay there upon the sand as Zalik walked away. He would come back with a collection of leaves and other stuff, as he began delicately applying it to the leg and arm you said was injured, along with your chest that had a rather large gash across it. It did sting, but you were still in enough pain that you couldn’t notice it as much.
A few days would go by, as the two of you never saw any rescue ships and began to assume they thought you were both dead.  You would heal up rather nicely, only having a large scar on your chest. Surprisingly, several of the equipment inside the wrecked hanger bay survived, including a small fighter, although you weren’t a pilot by any means, so you just left it there. Perhaps it could come in handy later. The thing that excited you the most was the holoprojector was completely intact, so the two of you could keep yourselves entertained upon this unknown planet. Zalik was large enough to deconstruct the wrecked hanger bay and make a makeshift shelter with it, even finding a prefabricated base mostly intact nearby. You would set that up yourself, and would have the equivalent of a small apartment to live in. You would find a strange feeling of comfort within this scenario, having someone to talk to in the form of the Amtsvane you were assigned to. One night, you noticed he was absent from the remodeled hanger bay and began walking around to find him.
POV: Zalik
I had just finished my meal for the night, and making sure the human was asleep, went over to a secret spot I had cleared out in the forest. Within it, I had carefully carved a couple of holes in the ground and filled them with a silicone-like material I found stored within some of the trees. It would do as a makeshift sex toy as I was pretty pent up and needed something to release my loads into. I began slowly rubbing my twin slits as my prehensile dicks began to harden. I then lined them up and slowly slid in and found the natural texture rather pleasant. With that, I closed my eyes and began slowly humping, holding onto the two large trees conveniently placed where I need them. It was surprisingly nice and before long I began picking up speed. Usually, I would try and edge myself as I’ve been a bit of a hair trigger, but I’ve gone weeks without anything, and it was driving me and my body insane! I’ve already had to keep myself preoccupied with making a shelter for myself as the tiny human made his. Thankfully he wasn’t around me enough to see my slits leaking copious amounts of precum.
I began picking up the pace again, noticing I had slowed down a bit while in thought, and could feel my impending orgasm steadily approaching. Though I didn’t want to cum quite yet, so I focused solely on holding it in. So much so that I didn’t notice he had found me, having probably been looking for me out of worry. I kept going, my thrusts soon getting quicker and falling out of rhythm. I slowed down a bit, still wanting to hold on, but felt my twin cocks both become tingly and throb intensely. I had misjudged how close I was and was going to pay the price. I resumed the same quick, irregular tempo as before, before slamming my cocks into the makeshift fleshlight. I let out a mighty roar as I came hard, my fluids gushing out of the holes as I had forgotten to make a cavity for it to fill, ah well. My climax would go on for a good minute or two, before it died down to an idle throb. When I opened my eyes, I saw the tiny human sitting between the two trees I was using as handlebars, appearing to masturbate as well.
End POV.
You had stumbled upon Zalik seeming to grind against the ground, perhaps he had an itch? It was only when you came closer that you noticed he was doing something far lewder. He was literally fucking the ground, or more specifically, two holes in the ground as you learned he had twin cocks. You’re not sure why, but the sight of him humping turned you on. Since he hadn’t noticed you, you quietly made your way to just in front of him, between two trees he was holding onto for support. You stripped down and began slowly rubbing your semi-hard member, using a bit of your saliva to make it slicker. It wasn’t long before you fell into a rhythm of stroking your now fully hard cock at double the pace he was going. You sighed softly, finding the sight to be ever so arousing, that you had to slow down unless you wanted to finish early. You noticed he seemed to be having the same issue as you saw him slow down. Perhaps he was a hair trigger.
You picked up the pace again as his tempo became more irregular. You knew he was close, and so were you. He let out a mighty roar that overshadowed your load moan as the two of you came about a minute apart from each other, with you shooting your seed into the ground in front of you, and him shooting his seed into the holes, with it quickly gushing out of said holes and all over his legs. When your orgasm died down, you noticed him looking down at you, a mix of curiosity, embarrassment, and worry on his face. You suppose he wasn’t expecting you to find him, much less join him in masturbation. You simply sat there, as the two of you stayed quiet, before noticing both of your presences turned the other on. Before you knew it, he would wordlessly lay on his back, inviting you to come over. You would do so, sitting down between his now rehardened twin cocks which were each at least ten feet in length. You moved over and began rubbing one of them, as he closed his eyes, seeming to let out a sort of purr. You were glad he was enjoying this.
POV: Zalik
I watched as he began hugging and rubbing one of my cocks. For some reason it felt really good, and I was leaking precum in no time. He didn’t seem to mind it leaking down over him and just kept pleasuring me with his body. I just watched as he did everything he could to pleasure me, and soon enough I felt the familiar tingle within both my cocks, I tried to warn him, but the pleasure snuck up on me and I came out of nowhere, letting out a roar as I watched him get covered in some of my cum, while my other cock sprayed high into the sky due to it having received no physical touch. Overall, this orgasm seemed to be far more intense, and lasted longer than my previous one. It eventually died down and I watched as he wordlessly made his way for my other cock, before massaging and rubbing it with his body. He would do this for a while, making me cum a third time. I lay there in utter bliss, unable to think clearly. Soon enough, this orgasm would die down, and I lay there, panting. From then on, the two of us became quite close, the tiny human and I. He moved up, still covered in cum, and began to kiss me softly, which I would both kiss him back and lick the cum off his body.
End POV
You were pretty tired by now, and after a long make out session, would lay down on his belly and rest for the night. You had a pleasant dream about the two of you.