Excitement builds during the split but the real activity starts after it

Samus separated her lips from the other Samus's. They felt the overwhelming sensation of being kissed. After all, their bodies were still one. They looked into each other's eyes. Now that they'd started, they really didn't want to stop. Together, they turned to the computer.

Samus: Is there a place where we can rest in private?

Computer: Sure, Samus. There are several cabins to accommodate any guests at the station. Do you have specific needs? You're currently the only guest at the station. You have complete freedom to choose.

Samus: The closest one will do.

Computer: Okay, accommodation section #3 is 150 meters away. You can reach it via...

-----

Shortly afterward, Samus reached one of the various accommodations and entered it. It was a simple cabin for one person, spartan, but sufficient for the needs of the moment. She undressed and sat on the bed.

Samus hugged herself and began to imagine her upper body beginning to split.

Once again, the process wasn't quite what she'd imagined. Instead of expanding from the center, it expanded from the right. The space between the two heads hadn't narrowed, while a second breast formed to the right of her right breast. A second nipple, oriented toward the left, grew from the central breast. Inside Samus, a second spine began to form, connecting the new head to the nervous system of the rest of her body.

Samus could feel her body being moved by her other head. Her right hand moved to caress her face. Their lungs were still connected, both breathing heavily and excitedly.

Samus continued to imagine herself splitting in two, and the nanites continued their work. The central breast split in two, and with it, their lungs separated. A shared shoulder formed between them. Her abdomen began to expand, while the various organs took shape inside.

Now they were able to use their back muscles to push themselves together, or at least try to. The left Samus's right breast could crush against the right Samus's.

In a mirrored fashion, Samus's hands moved, pushing their breasts together and savoring the sensations their squeezing offered, but even that wasn't enough, they separated again.

Their torsos separated, and starting from their shared shoulder, it split in two, and from them, flesh grew, still connected to both, to form their new limbs. When it ended, their new hands were clasped together with their arms raised upward. Their abdomens had expanded, allowing the two Samuses to face each other almost perfectly. They held each other tightly and kissed while their remaining legs rubbed against each other.

Their concentration returned to the separation, their pelvis began to widen, and their reproductive organs were stimulated to separate, creating a mixture of pleasure and sudden pain that stopped for a second leaving them breathless suddenly, both looked at each other, both saw the determination not to stop, they returned to concentrate, the sensations of their femininity separating were intense but Samus was a tempered woman so she tolerated them for a time that they could not quite define and then ended, now they had two separate pelvises, attached together at the beginning of their hips, the creation of the legs was much easier and happened in a few dozen seconds of growth of their flesh and then they were finally separated in two, the process was intense especially when they had reached the pelvises, both women were sweaty and breathless, in their eyes was a strong excitement, they pushed themselves on top of each other again lying on the bed and starting to kiss and touch everywhere on the other's body, this time there was no longer any connection between the Their bodies were two separate Samuses, the same person in two bodies, two mirrored and identical people but still two distinct people until they wished to reunite as one. This would be Samus's first night with herself, the first of many.