Well. Here I am. Stuck inside this warm dark environment. It reminds me of the little lavacave except there are noises that can't be mimicked. Though I wouldn't mind trying. Betcha wondering what I did to join with my body.
Well this close to my body being habitable, I was losing my intangibility. I waited for him to get ready for bed. He's been rubbing his abs for a while. I still don't understand. I was hoping for dispair at the loss of his toned abs, his family, and friends. He has been absorbed with his now flabby abs as he runs his hands over it again. He could feel the movements of the body or so he claims. He likes to talk aloud now. He makes me laugh thinking I was completely inside him. I digress.
He was in the shower, his body relaxing in the hot water. He was still touching his stomach when I came behind him. He was too tight for what I needed to do. I filed through his mind finding the memory I needed. Soon he was moaning in pleasure and pain. I swirled around him nothing more than smoke. I laughed as he looked at me. He muttered my name before I forced my form into him.
I went slow forcing as much as I could into him at once. He tears ever so slightly before my magic makes him more elastic and heals him. I sat there for a good five minutes all of me inside him before I pressed on. He was doubled over by this time, pain over-riding his pleasure until I hit his prostate. I think he fully understood who he was carrying as I forced myself further into him. He was crying and screaming my name. Excellent.
I saw what my magic had created. The plug still in place at the base of the cervix. I had to push through it without disturbing it and losing precious safety. This is the tricky part my brothers. This is where all the reserves you gathered from his pain and suffering comes in handy. Using what tangibility I was still able to do I slid through. I almost got through it without moving it. Almost. I found the body looking more very developed. It still had a bit to do. My tails weren't as long nor all visible. My hooves were looking more pliable than solid. The mouth opened and I fell in.
Now I'm waiting patiently. My first hypothesis was correct. My body would grow faster now that I was closer. He's thrilled and talks to himself even more murmuring lullabies to me. He is so stupid. He's even tried asking me if I really was who I claimed to be. Would I lie? I'm hungry now. Let's see if I can get a decent meal down here. I feel like dog and canary. Until next time.

---

What is he doing now? Here I was all ready for some sleep and he's smacking my walls. I kick him hard. I hear his gasp of pain as my hoof makes contact against the top wall. That will teach him to wake me.

  Nicodemus? I groan and roll over. That hurt.
   The next one will be to your lungs. Stop smacking me.
  Sorry.

    Great now he's going to cry. So much for sleep. I shift using my arms and my fourth tail to push off the bottom enough to shift into a better position. There's his hand again. Always covering every movement I make or trying to encourage movement. Since he woke me up he has to suffer my rules now.
     
    On your knees.
   What?
    On your knees.
   Why?

    He cusses as I kick his rib and he tries to get me out from under the cage. I shift lower in his body as he sits up. Good. My fifth tail is closer to the cervix. I wait until he stops moving before I start. My thickest tail slowly circles around the plug head I forced further into him when I entered. He shivers.

   Nicodemus...
    Hush.
   Don't...
    Carl. You know you want it. I can see your muscles react. Would you prefer my other spell as well?
   Nngh.

    I hear no more complaints. Only the muffled moans of pleasure as my tail circles his cervix. I add gentle pressure against it as my other tails begin their massage around the confined space. They seek his second pleasure spot which has moved further from my fist as I've grown. His body is tensing and I stop everything. I don't move except for when his breath and intestines make me. He's shifting to his hands giving me more room to move.

   Nico? Why'd you stop?
    ....
   Nico? Ah-ah-ahhhh

    I start again just as his muscles start to relax. I continue this game for nearly an hour bringing him close to his release only to pull away or stop all movement. His release comes but not at my choosing. My walls have pressed against me forcing my head against the plug. I hear his pleasure as his muscles tense slowly loosen. My walls have yet to resume their roomier shape. His pleasurable moan turns to one of pain. After 245 heartbeats they return to their normal shape. Interesting. I must look into this phenomenon.

---

Nico?

    I groan and turn over. I haven't slept much. That strange tighting has been happening every time I try. I kick him and hear the satisfying gasp as I hit his rib. I feel him pushing against the membrane that separates us as he tries to move me away from it. It works for now but I have no more room. My tails are pressed to the back of the uterus. I can feel his intestines. My head is resting against the cervix and bladder as my legs nearly curl closer to me. I'm not done yet. Not by a long shot.

        Nico? Let me go to a doctor. Please.

    Oh yeah. Now I remember why I'm up.

         No.
        But I feel like a blimp. I look like one.
    There's his shadows of his hands. I wish I never established that telepathic link with him. Let this be a lesson to you, my bretheren. Never establish a link with a mortal. It's bad enough they try to force you to move to entertain themselves. All he ever does not is complain.

         Why not?
          You're a guy.

     Now he's crying again. Great. I kick gently trying to reassure him.

         You're ashamed of me. I'm a freak. A freak.

     Oh joy. I push my arms on either side of his uterus walls. I channel energy through it making it more elastic. I pushed making more room with my tails. Soon he was moaning in pain. Good. Pain and sorrow. Two good things for a quick magic replenish. I start to grow again. There's his hands. His body tries to reject me but it soon gives way and becomes looser as I surpass the human toddler growth. His pain. So much pain. I'm now the size of a prepubescent child.
         
          N-Nicodemus...stop. I..I'm sorry. I-I won't go to a doctor. J-Just stop.
           I can't. Not yet. Just relax.
          But it...it...

       Finally he's out. Good for him bad for me. I'm only the size of a teen now. And I'm running out of room. Remember your aceleration spells. You will need it and the de-aging spell. It will make it easier on your Vitra Tribuo. Oh. And make sure he is on a bed or chair before using the first one. Now I'm tired. My joints hurt from all the growth. He's going to be hungry when he wakes up...Now I wish I remember that weight spell. Anyone care to remind me? Anyone?

Thank you again Kicking. You saved me from a major panic. :D
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I watch in horror as precious fluids begin to leave the membrane. I'm no where near the size safe enough to pass through him safely. I hear him gasp in shock.

Nico?
Don't panic. Just stay put.

I'm trying to move away from the opening, using my tails now that the boyant fluid is gone. I make a slight progress as I wrack my mind for a way for me speed the de-aging process. Oh crap. My tails give under the pressure the walls are putting on me. I hear Carl groan. His heartbeat speeds above me and I cannot count on that for accuracy. But the contraction brings me power. His pained moans are easier to hear. I try again. Progress. I'm nearly 9 months now and deaging rapidly. Only my hooves remain full grown. I feel him stand as soon as the contraction lifts from him.

Nico. What's going on?
Piece it together you, worthless ass. What happens in at the end of a normal pregnancy?

I think he understands since he shut up. If not too bad. Seems his body decided for us when I would come whether we were ready or not.
_____-------______-------______----____

Just had lightning strike my front yard. I'm getting off anything electrical. I'll finish later if this computer doesn't fry.

Oh--this is really cool. Love anything involving mpreg and the supernatural. :)

I wait for the next contraction patiently, my tails moving along his prostate. I hear his moan of pleasure and I can hear him murmuring.

"Mmmm. This is so wrong....mmmmm.....so very wrong."

I feel his body preparing to orgasm as my tails tease him again and again. He orgasms and my head is out. The first thing I see are his two little friends just coming to settle back after releasing their salty juices. I can see the floor and he is squatting against a wall. How nice. He set up little towels and blankets to cushion my fall. I see his hand coming long before I feel it trying to help me clear my nostrils. I am already trying to cough the liquid out of my mouth. I hear him gasp as my coughing jerks my body, pushing against his oh so sensitive prostate. My shoulders start to turn as another contraction grips him. One shoulder is partially out. Then the next. I can hear him howl in agony as pain over-rides his pleasure. Soon both of my shoulders are free. I slide out of him with ease. I am soon on the floor gasping for breath and waiting for him to severe me from the only link to him. I watch him collapse to the floor panting. His tan is long gone as are his abs. He is sweaty and shaking. I watch him pick me up and can feel that emotion again. I don't understand it. What is that emotion? I see him take the scissors after tying a knot and cut my tail and me free. He guides me to his swollen bosom where I take my first real drink. I need it all in order to regrow. I suckle until it is dry.

As I suckled I grew. Now I move to the next. A ten year old with a five tails and the start of horns. I feed on the next. Soon my hooves don't feel heavy. I gaze at him, his tired eyes starring into mine. I smile revealing the pointed teeth and kiss him on his supple lips. I pull back when I hear him moan in pleasure.

"You are mine, now and forever. Your body. Your soul. All are mine to use as I see fit."

I press on his stomach as he rests his head on my chest, clearly exhausted. As soon as the placenta is out I work my magic. He is now charged on an energy he shouldn't have. I keep my promises my bretheren. Let me deflower him once more and open the portal within. Then, Azural, your people may enter him one at a time. After all. He is my Vita Tribuo. For eternity. Mustn't break him too soon.

To be continued....?

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This is all I have so far. I'm wiling to write more if people think more is needed. Otherwise I'm going to focuse on my other stories. Thanks to those who supported this quick little story.