"That guy" had come inside Tae, but despite the shared orgasm neither of them felt relief; "that guy" felt the need to be plunged deep inside of Tae, and Tae felt it too, the two trying out several positions until they found the best with reverse cowgirl, with Tae sitting on "That Guy's" lap, pushing herself down on his cock with all of her weight. The air conditioning had come on with their lovemaking and now that the action was stopped, goosebumps covered her body, so she pulled off a blanket off the education couch and covered herself and "that guy" with it. Soon, despite movement and lovemaking activity having ceased, both felt "that guy's" erection had not diminished, and had actually increased, pushing deeper and deeper into her womb.
Soon the councilor returned, and both of them tried to separate in surprise, but "That guy" was just too deep, and they stayed stuck together. Soothingly, he put a hand on Tae's bare shoulder from behind. "That's okay, you two relax. I need to explain this part." He sat down across from them and began to explain. Tae would stay in school and learn, but "that guy" now was to continue his party lifestyle, but outside the college. "'That guy' has a bit of a reputation as a player, and I know he hasn't been keeping his big dick inside the Culture." he nodded. "It's hard to keep men loyal, but now he has a biological urge to keep coming back. Normally, human reproduction combines traits from both partners, but from now on, his seed will only combine his and yours, Tae."
He looked at his watch and nodded. "Okay, it's been long enough. Why don't you try and stand up?" Tae looked behind him into "That guy"'s eyes, and with his nod, tried to stand up. It took some pulling, but eventually with a painless pressure building inside her womb until it suddenly broke free; his penis now slick from the breaking of the seal slid out quickly. Both of them looked down at it to see it was now covered in plantlike pods.
"So, 'that guy', you won't be able to attend classes anymore. Your time should now be spent finding willing women from outside the community, which shouldn't be a problem as your penis has been enhanced in size and potency. Once inside a women's vagina, a pod will fall off, and crawl into her uterus, where it will overcome the body's natural reproductive mechanism and begin growing there. Once you've spent all your pods (which usually takes 2-3 days, but we expect it to only take you 1-2), your urge to mate with Tae will begin to overpower you, and you will return here to fuck and repeat the process."
Tae slowly dragged her small petite hand up "that guy"'s chest, looking him in the eyes. Her biological imperatives had been completely redone to make this sound sexy as fuck, and was happy she'd be able to continue studying forever while "that guy" had to essentially drop out. She knew she could use her powers to change this whenever she want, but the idea sounded sexy... for a few cycles at least.