Author's Note: I've got to admit to an oops/correction. Assuming you've already read the previous chapters, you might (or might not) notice that I have shortened the distance from Teclewt to Earth, from 97,000 light years down to 47,000. Why? Because I forgot to sanity check the 97,000 number when I started writing this story. The diameter of the Milky Way is about 100,000 light years, with Sol and Earth being about midway between the galactic center and the edge. As a result, the furthest any star in the galaxy could be from us is about 75,000 light years away, at the outer edge on the opposite side from the core. Any point 97,000 light years away is actually outside the galaxy. Shortening it to 47,000 puts Teclewt most of the way around the galaxy, but still within it. Changing this has required me to rewrite the pieces of Chapters 1 & 3 which referred to the 97,000 distance and I have resubmitted those.
February 27, 2016
Two weeks into Zack's transformation, as we prepared for sex during another group date, ze asked me, "Will you initiate me, Dan?"
"What, you mean you want me to be the first to enter your new pussy?" I asked. "Why me and not Cathy? Zir cock is already working."
As it had when Cathy transformed Nancy's body, the female-to-Nova transition had only taken a week and ze had already screwed me on several different nights in the preceding week. Zack still had a week to finish zir transformation, with the vagina ready but not connected to the uterus yet.
"You're my best friend and I know you had to let go of some hesitation to let me enter you that very first time. I want to return that trust and show you that I've embraced being Nova instead of male. But, if we don't do it tonight, I will either have to wait until after Cathy gets me pregnant or make you use a condom."
"Do you want Cathy and Nancy involved?" I asked.
"Not a group position for this," ze answered. "Just you and me, face to face until we've both had an orgasm. Okay? I know you could just read my mind to know how I'm feeling about it in another position, but I want that eye contact, too."
"Alright, let's do it."
Once we were all naked, Zack lay back on the bed, stroking zir cock to stiffness, while spreading zir legs to spread open the newly revealed vagina. The inner labia that had developed were the largest any of us had and my mouth actually watered at the prospect of exploring them at some point. My own cock was rock hard already, as I climbed between zir legs.
Nancy and Cathy spooned to our right, Nancy entering Cathy from behind and reaching around to slowly stroke Cathy's cock as the two of them watched us.
I stroked the head of my cock between Zack's labia, looking to stimulate zim, but ze suddenly reached down to grab my ass and pull me forward. I sank only about three inches into zim on that first stroke, the walls of zir pussy resisting me from going further. I received a burst of pain from Zack through the empathic link.
"You feel huge, Dan!" ze said.
"You're basing that on empathic experience of three people who were already used to being fucked, Zack. I'm actually smaller than you. However, you didn't give yourself a chance to get turned on enough before grabbing me. Just because your cock is hard, that doesn't mean your pussy is ready. You aren't dry, thank god, but I can tell you're clenching down on me from nervousness. That's why you're too tight to let me in and it hurts to try. The more turned on you are, the more you relax and you'll find it easier," I advised. "We're not in any rush. I'm going to use some slow, short strokes until I know you're ready for more."
Not moving more than an inch or two, I stroked in and out for about a minute as I gradually felt Zack relax around me, feeling it happen from both sides of the link. "A little more?" ze asked, hopefully.
I slid another three inches into zim, without the same resistance as before and then maintained forward pressure and sank the rest of the way, until my belly was pressed against the fingers still stroking his cock. "Oh, that's good," I said, resting for ten seconds before I slowly withdrew three inches and then pressed inward again.
After three more of these strokes, I leaned down and kissed Zack on the lips. Ze squeaked, briefly, before returning the kiss. Telepathically, I asked, 'Still feeling a little of that homophobia, buddy?'
Still kissing me, ze answered, 'Only a little. I want you to fuck the rest out of me.'
'Deal.' I pulled back further and pushed my entire length into zir relaxed sheath. Ze moaned, both into my mouth and into my mind. Over and over I stroked into him, increasing my speed. I broke our kiss to raise myself onto my hands over him and began to thrust more strongly.
Zack reached zir hands to my chest and began to caress my still-growing breasts, giving me shivers. "Oh, fuck!" I said aloud, when ze pinched both nipples.
I was getting closer to my orgasm when Cathy screamed in zir own climax beside us. When ze reached her hands to touch my hip and Zack's, ze linked both of us into zir experience. I exploded almost immediately, filling Zack up, as Cathy's cock, being jerked by Nancy, sprayed both of us with cum and then Zack's cum flew between us as well. After several strings criss-crossed my stomach and chest, they dripped onto Zack's. Through the link, I felt Nancy was cumming, too.
"What a mess," Zack said, when we were all done.
"Oh, we can clean you both off," Nancy said. "Tongue baths are fun. And with the empathy, I bet it feels even better. On your backs."
Zack and I both lay on our backs and Nancy moved over Zack while Cathy moved over me. They chased every droplet they saw on our skin. Through the link, I felt like I was licking myself, tasting both Zack's and Cathy's cum as slightly different flavors.
When Cathy had gotten my skin mostly clean, I pulled zir pussy over my face, as I cleaned up Nancy's cum from zir labia and sought out more from inside. Cathy grasped my cock and stroked it back into another erection, then sucked it into zir mouth.