Rejuvenation

As you inserted the bottle's tube into your ass, it immediately began pumping its contents into your colon. Steadily, the liquid flowed in more deeply, and you were surprised to feel the muscles of your transplanted Cuni colon begin to contract in a rhythmic milking action, drawing the semen deeper into your intestines. At the same time, your colon's taste buds reacted to the semen, and this time the flavor could only be described as pure ambrosia.

The sweet nectar flowed deeper, and you sensed that it had finally reached the matter-to-energy converter that served as your stomach. This time there was a distinct tingling rather than the sudden alertness that you had previously felt. Unlike your previous meals, it didn't seem like time was slowing down around you, and there was no heightened clarity either. Instead, the tingling increased further, becoming warm pulses of euphoria, and then burning waves of bliss that surged through your entire body. It was like a spontaneous orgasm from out of nowhere, with no sexual trigger. The sensation was so intense that you had to let go of the bottle to brace yourself on the floor with both hands. However, the bottle didn't fall since your sphincter was now clenching the tube so tightly that it couldn't slip out.

The Grey doctor noticed your reaction, and he quickly started an external scan of your body. For the next few minutes, you were nearly helpless as you tried to endure the unimaginable searing pleasure that flared through your body. All the while you writhed in intense pleasure, panting and moaning in rapture. Finally, the feeling began to wane ever so slightly, and you could finally talk between your panted breathing. "What...happened?"

"This is remarkable!" exclaimed the doctor. "Based on these readings, being rectally fed this amount of semen appears to have caused the Cuni colon to trigger a human enzyme catalyst that in turn reactivated the regenerative abilities from the Gargo tissue we used for your transplant. However, instead of being limited to that region of your body, the enzyme is allowing the regenerative agents to be transmitted to your bloodstream and throughout your body."

"It feels like...an intense...burning hot orgasm...that just keeps going," you gasped.

"The sensation is a side-effect. When your ship crashed, there was minor cellular damage to many other parts of your body besides the organs we replaced. Your body is undergoing a full rejuvenation." He paused and looked back at his display and then added, "Even more remarkable are the changes to the Cuni organs. The donor was 12 years old, but looking at them now, they appear as if they came from a Cuni half that age, in the peak of their physical condition.