I still vaguely remember how this story started, but so many things have happened since then that it seems like that was a dream or a fantasy about some past life that may or may not have existed.
I recall being fucked in the ass on a daily basis by J, my wife, but with a rubber cock that she attached to her hips with some sort of belt. I remember I had a cock of my own then, but it had not been allowed an orgasm for quite a while. I think this was some sort of roll play we had agreed to, where she would tell me that the only way I would allowed to have an orgasm was if I came from her rubber cock fucking my ass.
The last thing I remember before our new journey began was standing on all fours with my wife fucking me doggy style, teasing me about not succeeding at cumming, no matter how much she fucked me in my "sissy pussy".
She was using our new "magical beast" silicone dildo, which was longer and significantly wider than anything I had ever had in me before. The unusual bumps and ridges gave me a whole new set of sensations on top of being stretched, and the soft silicone felt great as it slid in and out of me.
As J fucked my well-lubed hole with this monster dildo I moaned out, "it feels so amazing having you fill me up with your huge cock...I just wish that you could also feel the sensation of sliding in and out of my ass."
Tightening her grip on my hips, J responded, "just seeing my magical cock enter your pretty little ass gets me soaking wet," which I knew was very true. After nearly every session I had the pleasure of cleaning up her sopping-wet pussy and helping her to a powerful orgasm. She actually came harder after fucking my ass than from traditional sex.
Then she added, "but I also wish I could feel what it is like to be inside of you, and to fill up your ass with my cum."
My last memory of that strange life in that strange world was the shadow of some giant female demon seeming to appear from the corner and saying, "as you wish...."
My new life started when I opened my eyes in what is now my home. I didn't have time to register much more than the throne-like chair that was in front of me because my attention immediately focussed on what was happening there.
My wife, or some modified version of her, appeared to be eagerly sucking the oversized cock of a ten-foot-tall woman. While I recognised the woman on her hands and knees attempting to devour this giant cock and ram it all the way down her throat as my wife J, her breasts and nipples had grown significantly in size, while remaining as round and perky as her previously B-cup tits had been. Her ass had become more rounded as well, while her waist seemed to have drawn in. J seemed to have transformed from an attractive and fit woman with into a fantasy porn star.
The giant woman with the giant cock looked at me and smiled and reached down to pat my wife's left hip so that she re-positioned herself, giving me a direct view of J from behind. I saw her even more perfect ass and hairless pussy. But hanging from just above the pussy was what appeared to be a real-life replica of her "magical beast" strap-on, with pre-cum dripping from the tip.
J hadn't noticed I was awake yet, as she was so pre-occupied with the cock she was sucking. Seeing her force the thing, despite her gag reflex, down into her throat, was enough to give me a raging hard-on. Or at least it should have been.
My next discovery came as I began to examine my own body. I seemed to be completely paralysed in the chair I was in. My arms and legs were fixed to my seat, but by some power that prevented me from being able to control them. I had just enough control of my head to look down at my penis, which no longer had any hair around it and resembled the shrunken appendage I often laughed at after a day of skiing or cycling in especially cold weather. While I felt massively aroused by the scene I was witnessing, and could see pre-cum leaking out, my penis was hardly an inch long and showed no other signs of life.
The giant futa woman winked at me as turned her attention back to my wife, reaching one arm around to stick two large fingers into J's clearly loose and lubed ass while using her other hand to push J's head down so that her lips reached the very base of the two-foot cock just in time for the giantess's orgasm.
I had never seen a longer lasting or more arousing orgasm in my life. She let out a giant, satisfying scream of pleasure, her body convulsing while she held my wife's head in place, as if J's body was just an accessory for satisfying this monstrous cock. I could see J's stomach begin to bulge from the huge amount of cum being emptied into it. This should not have been possible -- my wife should have been suffocating and vomiting from this treatment. But instead J seemed to be in a thrall as her throat and oesophagus created such a tight seal around the giant futa cock that all of the cum just continued to inflate her stomach.
Finally, the giant woman finished and release my wife, letting her cock slide out of J's throat and hang between her legs. Or perhaps it would have been more accurate to say she let J slide off her giant cock and collapsed on the floor. J caught her breath as she wiped a few globs of cum from her lips and chin back into her mouth and murmured something that sounded like, "thank you mistress," before getting up to eagerly clean up what remained on the giant woman's cock, swallowing every last bit.
"Your wife has become quite a fan of cum, which I guess is only natural when it's the only food she gets," the woman finally spoke, looking directly at me.
She stood up and walked over to me, displaying her amazing, hairless female body, enormous tits with two-inch nipples as thick as my thumb...and the giant cock that had just filled my wife's stomach with cum.
"Welcome back -- you've been out for a full week while I was transforming your wife," the futa giant said as I glanced behind her to see my wife licking the last cum from her fingertips, stroking her engorged cock and seeming not to register my presence in any way.
"I'm sure you've got all sorts of questions about what's going on, but you're probably also very hungry after your week in a state of suspended consciousness. Even the relatively minor changes your body has gone through used up plenty of energy. So, I will let you choose between feeding," she said, lifting her cock and pointing it at my face, "or explaining what is going on and why your wife is stroking her hard cock, while yours is...being repurposed."
Just the mention of feeding made me realise how incredibly hungry I was, and after a subtle hand motion by the 10-foot goddess returned my ability to use my mouth I managed to say, "food, please..." as my eyes fixated on the nourishment already dripping from her cock.
"Good choice, though we'll have to work on your manners," she said, "but for now I want to focus on breaking in this new throat, especially since I feel like my first orgasm was just a warmup run for a really explosive second one," she said as she approached me, her thick cock throbbing with arousal. As she stood over me I looked up and managed to open my hungry mouth as the first large drop of precum fell from about a foot above me. The salty liquid tasted addictively perfect and as I quickly swallowed it, and it sent a tingling sensation through my body as it descended into my gut.
