Ty followed Lisa into her bedroom, locking the door, and checking that the one-way soundproofing was still on. He was dying to know what had happened, but before he could ask, she grabbed and kissed him, as if she hadn't seen him in ages. Finally, she said, "Ty, you scared the hell out of me. Out of both of me!"
WTF? Ty thought. "Um," he said, "BOTH of you? I don't understand!"
"Remember what you were planning to do?" Lisa asked.
"Yes," Ty said, "I'd previously on multiple occasions transformed to have most of your body, but this time I wanted to transform completely into you. But it didn't work, and I passed out, and didn't come to for nearly an hour."
"No, your transformation DID work, Ty," she corrected him. "That was the problem! You transformed EXACTLY as you said. You transformed into me, COMPLETELY. There were two of me. Neither me realized, until after having a lot of fun, that NEITHER me was you. Neither of me even knew which of me had previously been you! Both of me were panicking, and tried various things that didn't work. Neither of me had your powers. Finally, one of me realized that we could use the power you gave us to transform you back. Both of me concentrated as hard as possible on that, and passed out."
"Oh, no!" Ty said. "I can't believe I was so careless! Thank goodness I gave you the power to transform me back to my normal form."
"Me either!" replied Lisa. "I'm starting to agree with June that your power may simply be too dangerous."
"Well," Ty said, "since we both are able to transform the other back to normal, I think we're safe, even if I screw up like that. I clearly should think things through more, though.
"Anyhow," he continued, since we're both OK now, what would you like to do?"
Lisa thought for a moment. "Maybe just rest a bit, and enjoy our normal forms? Or, if you really want to do kinky stuff, maybe just transforms we've already done, or that only involve adding and removing body parts."
"If we're going to rest," Ty asked, "would you mind if I try your mattress topper and pillow form? You seemed to enjoy that a lot."
"OK," Lisa agreed, and moved the normal pillows from her bed.
Ty transformed himself into a furry mattress topper, and as he had done for Lisa in that transform, made himself sensitive not just to physical stimulus, but also to Lisa's feelings. He grew two breasts like Lisa's normal pair, but then grew them into large pillows, moved them to the head of the bed, and made them separate from his main body.
Lisa lay down upon him. "Ooh, you are very comfortable," she said, though at the moment Ty had no ears. Lying comfortably helped her continue to calm her nerves, which were still pretty shaken up, even after dinner.
Ty felt utter bliss from Lisa's weight upon him, and her head on one of his pillows. Now he could see why she'd been so happy with this form. He daydreamed a bit about other transformation ideas, but mostly was content to just relax.
After a while, Lisa started thinking about showing Ty more of the potential of the mattress topper form. She shifted slightly to one side, then used one hand to press into the mattress topper a little to the side of her hips. Ty must have gotten the idea, because a big erect cock grew up from that spot. She started rubbing it with her hands, then got on her knees, positioned herself over it, and impaled herself upon it. She started riding it slowly, but soon picked up the pace.
Ty must have changed himself a little, because his cock started thrusting itself up and down, increasing her pleasure. All that was missing was his hands caressing her, but she wasn't complaining. She grew her second pairs of arms and breasts, turned her nipples into pussies with tongues, and started massaging all four breasts with her hands, and licking her pussy lips and clits with her pussy tongues. She was near climax, but was trying to delay it until Ty came. She didn't realize that Ty was trying to do the same for her. Eventually she couldn't hold it any longer, and had an orgasm.
Because Ty's form felt stimulation from that as well as his own cock, and from her weight on top of him, he had a huge orgasm just after hers. She felt him shoot cum into her over and over, and she had another orgasm.
She felt sated, but remembered that when she was a mattress topper herself, Ty had continued to stimulate her in multiple ways. She felt his cock detumescing. She stroked and kneaded his furry body surface with both hands, making him erect, and soon felt him ejaculate again. Then she grabbed one of his pillows, and started massaging it. He had another orgasm.
She collapsed onto him. After a few minutes, she pulled herself off of his cock, and rolled over. His cock shrank back into his body, leaving just his furry surface.
Later, she decided to get ready to sleep. She got up, went to the bathroom, brushed her teeth, and took a hot shower. She thought wistfully that it would be nice to have Ty in the shower with her, but she thought he was probably enjoying his form enough that she didn't want to ask him to transform. She set her alarm, turned off the light, and lay on top of him again. I could really get used to this, she thought. Before long she fell asleep.