He climbed into the bed beside her and pulled her in for a kiss, his tongue sliding into her mouth and battling hers for dominance.  His won, of course, and he started thrusting his fingers into her again as he kissed her, effectively muffling her moans.  At this point, his own magic had solidified into a very erect ecto-dick, and he was just as in need of release as Amia was, so he laid her back down on her bed and stripped off his clothes before lining himself up at her entrance.  "This might hurt a little, but only for a minute," he warned her.  She nodded, silently telling him to go ahead, and he complied.  He slowly slid his ecto-dick inside her, paying attention to the little whimpers of pain that she occasionally uttered, but not stopping until he was all the way inside her.  Once he was all the way in, he looked at her to make sure she was okay, and saw a few silent tears of pain running down her face.  He wiped them away gently and endearingly as he waited for her to adjust, then started thrusting into her at a slow and steady pace once she gave him the okay.

She moaned loudly as he moved inside her, her ecto-vagina still extremely sensitive both from her first climax and the fact that this was her first time for all of it.  After a minute or so, however, she grew tired of his slow pace, and she wanted him to move faster.  Just like that, as though he had read her mind, Error picked up the pace, his thrusts gradually gaining speed as he let out his own sounds of pleasure.  He then started massaging her ribs with one hand while the other rubbed her clit, causing his twin to loudly moan his name and cry out in pleasure.  This went on for a few minutes before Amia felt the knot form again.  "E-Error, I-I'm g-gonna-!" She stuttered before letting out a loud cry of pleasure as she came again, this time all over his bulging ecto-genitalia.  The tightening of her walls as she came brought Error closer to his own climax, but he still wasn't quite there yet, so he kept thrusting, by now pounding himself into her as quickly as he could until he felt the knot form in his magic as well. "A-Amia, I-I," he stuttered as he tried to warn her, then he came inside her with a loud moan before he could finish the warning.

What he hadn't realized was that, as he was pounding into her at full speed, she was brought close to her climax again, and the feeling of him finishing inside her pushed her over the edge, so she came right after him with a loud moan of her own.

By this point, both the twins were exhausted, but Error was determined to completely satiate Amia's heat before they rested, so he went on even after his genitalia dissipated.

There was still one thing Error had yet to do with her ecto-vagina, and he didn't quite trust himself with her soul enough to do anything with it, so he decided to do one more thing with her genitalia - hopefully it'd be enough to cool her down.  He brought his face down to her entrance and stuck his long, dark tongue inside her, which again earned a loud moan from the violet skeleton in question as he licked her walls and teased the area inside her that he knew drove her absolutely wild.

If Error was honest, this wasn't among his favorite ways to please someone, but he figured he'd give Amia the experience just this once; that way she'd at least know how it felt.  Apparently, it felt extremely amazing, because she was already reduced to a panting, moaning mess when he began sucking on her a bit.  It wasn't long until her inner walls tightened around his tongue seconds before she came into his mouth with a loud and extremely pleasured cry of his name.  He lapped up and swallowed every last bit of what hadn't made it into his mouth as the scent of her heat finally faded and she went totally limp on the mattress.

After her ecto-genitalia dissipated, he lifted his head to look at her and found her already passed out asleep, then smiled at her before falling beside her and passing out himself.  By this point he could no longer force himself to stay awake, so he was out like a light before his head even hit the pillow.