Samus chooses the Futa Upgrade

Looking over the possible upgrades, Samus decided to ask about the Futa Upgrade. Out of all of the other upgrades, it was the only one she wasn't entirely certain as to what it might change about her form.

"Computer, what does the Futa Upgrade entail?" Samus asked. The screen pulled up the upgrade, but a moment later an error appeared on the screen as the computer responded.

"I'm sorry Samus, but there are either no details about the upgrade, or they are only accessible after being installed. At the moment I have no possible details of what the upgrade might do."

Samus stomped a hoof onto the ground, a bit frustrated. "Well, I suppose I can always remove it if I don't like what it does. Alright computer, I'll take the Futa Upgrade."

A moment later the computer deposited a small purple chip. Grabbing it, Samus saw no distinguishable details on it, so she went ahead and slid it into the slot of her suit around her neck.

At first, Samus didn't feel anything different. But as time passed she began to feel warmer, and as the heat grew worse and worse Samus felt like she was starting to sweat. Not only that, but the pleasure from before was beginning to grow more and more, to the point that Samus was left panting from a mix of the heat and the growing need to relieve herself as her puffy horse lips began to drool with arousal.

Suddenly, a tight pressure started to form underneath her pussy, causing Samus to stamp her back leg in frustration. She badly wanted this heat to go away, and to go somewhere to blow off steam. But as more time passed, the pressure only grew worse and worse, to the point Samus was letting out sounds similar to a horse nickering.

Finally, when it felt like she couldn't handle the pressure anymore, something underneath Samus finally gave way, letting the pressure release and rush out of Samus. Samus couldn't take the sudden release and cried out in pleasure, her pussy clamping down and gushing out as she came.

As Samus recovered, she felt something hanging down from underneath her crotch, and whatever it was, was continuing to grow longer and harder with each passing second. Turning to the mirror, Samus moved her body around to get a better angle, having to angle her large ass in a way that allowed her to see underneath her legs. What she saw hanging underneath her caused her to let out a gasp of shock.

Underneath her horse pussy was a steadily growing horse cock. Rising out of her newly formed sheath, Samus watched in fascination as it continued to grow longer and thicker with each passing second. By the time it had finished growing, Samus could only guess that it was over a foot and a half in length, and was as thick as a soda can. Not only that, but it had a large, flared head that twitched lightly as she stared at it, as well as a ring around the center that stretched the veins that went through her new shaft. It was mottled in color, being pink with large brown spots covering its impressive length.

Just as she thought the upgrade had finished, a new pressure built up along the space right above her new shaft, causing Samus to moan as her pussy winked and her cock twitched from pleasure. A minute later two large balls popped out of her form, resting in an equally large sack above her dick. Each was the size of an apple, and she could feel them churn as they started to get to work.

With the Futa Upgrade fully installed, Samus was left to decide how she felt about this new equipment, and what she was going to do next.