Then Sam felt a tingling in her groin, and she knew a big change was about to happen. She braced herself for the pain, but to her surprise, she instead felt pleasure. Now that she wasn't fighting it anymore, it felt good! She gasped as her groin erupted in a pleasure unlike any she'd felt before, and with her legs unsteady she fell deeper into Aaron's arms. She felt her tiny penis grow erect, but then it began to shrink rapidly. Her balls created tension as they pulled tight against her body, and then in a blissful release, they finally popped inside of her, first one, then the other. As they traveled up a new canal they tingled with pleasure and massaged her insides, until they found their place as her ovaries. She moaned in pleasure greater than she'd ever had from any male orgasm. Her scrotum pulled in and reshaped itself, a gash opened up, and she knew it was done. She was a girl. And as she finally came, she pretty much announced this fact to the entire hall with her cry.
Coming down from her passion, she realized that Aaron had been groaning for a while, and suddenly she felt something poking her in the belly. He had a dick! Or he was getting one, anyway. She watched with wonder and lust as his bulge grew into her. Through her aura vision, she watched the last of his feminine energy transmute into masculine energy, watched as Anna truly became Aaron completely. She smiled as she looked into his eyes and her hand drifted down to his crotch to massage it, encouraging it to grow for her.
"Alright, that's enough!" It was Mr. Reynolds, who had apparently finally tracked Sam down. He pulled the couple apart, with some difficulty, and held them at arm's length from each other. "Calm down! Are you trying to accelerate your changes more? You don't know what could happen if you do that!" but Aaron kept groaning, as he braced himself against the wall, his orgasmic change not complete. His hand went down to work his still growing dick through his clothes as he lustfully stared at Sam. Sam smiled back at him, using one hand she lifted her robe and with her tail she pushed down her underwear, proudly revealing her brand new and soaking wet womanhood to her lover. With the other hand she pulled down the top of her robe to reveal her breasts. For half a second she wondered if she should worry that she was acting like such a slut, but then she didn't care, as long as she was HIS slut, and his alone.
"Stop that!" yelled Mr. Reynolds, but soon Aaron groaned in release and a wet spot appeared on his clothing. Several kids had come out of their room now and were staring at the spectacle. Sam didn't care. She was a succubus, and inhibitions and modesty were not the domain of that species. But she didn't lust for Reynolds anymore, or for any of the more masculine teenagers coming out of their rooms. Any pleasure they got out of seeing her body was incidental. She did have enough sexuality towards them to notice who was hot, but that was about it. Her lust was for Aaron, and Aaron alone. Like the doctor has theorized, she'd been able to bond with him.
After Aaron's climax, she decided to be a good girl for now and comply with Reynolds. She fixed her clothes, except of course for her shredded underwear. She also gave Aaron a mischievous wink, promising that they'd finish things later. He smiled back, a devilishly masculine smile that sent shivers through her.
Reynolds looked almost as tired as he did angry. "Go get yourselves cleaned up. This will NOT happen again. I'm going to see about getting one of you moved to a different dorm and we'll be watching you both VERY closely."
*We'll see about that.* Thought Sam, but she returned to her room and got in the shower. As the water poured over her, she calmed down, and reflected upon all that had happened. She was a girl now, and she'd accepted that fully, but now that she wasn't so horny, did she really want to be a slut that would expose herself in the hallway?