Author's Notes:

Contains: Futa on Female, Impregnation
Written by Ragabash

It was oddly new and strangely familiar at the same time. It was like the first time, even though they had done it many times before. Of course, things were quite different then. They were doing it for fun and to express their love for each other. But now, they were taking it further.

Twilight Sparkle looked at the body of Celestia, lying on the large bed in front of her. The backside was facing her and she presented her pussy, waiting for the unicorn to make a move. However, the white mare didn't hurry her. She just looked behind her at her lover, a warm smile on her face.

“It is alright, if you aren't ready yet,” Celestia said. “We don't have to rush things. If you need more time to get used to it or feel that it's to early to be a father, we can stop here and do it later.”

Father... It was such a strange thing to say, even though it was technically correct. Twilight looked down at herself, at the penis that extended from her sheath. Until recently, she wasn't even aware that alicorn magic could create something like that. Stallion genitalia that was not only fully functional, but could even produce fertile semen. Of course, if it didn't, all of that would be pointless.

“N-No,” Twilight replied, looking up at Celestia again. “I'm ready. I prepared myself well for this.”

The princess chuckled at that. “Ah yes, you spent a good part of yesterday to get familiar with it, didn't you?”

Twilight blushed at that. “W-Well, I have to know what I'm getting into.”

“Relax. Anypony would be curious in your case. And you are right, it's good that you know your new penis well.”

That sounded like she would to have it for a longer time. And that's not something that Twilight wanted. Even if it wasn't as bad as she thought. In the first place, she only volunteered to be the one with the cock, because she didn't want to have something like that in her. Even if it belonged to her beloved princess. The alternative sounded much better to her.

After collecting herself for a few moments more, Twilight finally went forward, hopping up the bed, and mounted Celestia. Her heart beat fast. She was still quite nervous and it didn't get better when the tip of her cock brushed the pussy of the mare below her.

Celestia reached up and kissed the unicorn on the cheek. “Take your time,” she said gently.

Calming down a bit, Twilight stayed like that for a short time. Then, she slowly moved her hips forward, pushing her penis into her lover. It was an odd feeling when the tip broke through the entrance. It was similar to when she touched herself with her hooves, yet different at the same time. She was surprised with the ease her thick cock slid between the lips. Whether it was simply because Celestia was quite wet or because she was... quite experienced, she did not know.

When it was completely buried inside the white mare, Twilight began to move her hips back and forth. As strange as it was, she quickly got used to it, as the awkwardness was replaced by pleasure. She moaned a little as the walls of Celestia's tight pussy rubbed over her hardness.

“Hm... You are doing well,” the princess praised her. Again, she kissed Twilight, but this time on the lips.

The unicorn returned the kiss, while she thrust into Celestia and pushed her tongue into her mouth, as she sped up her movements.

As the pleasure got stronger, she craved more of it and thrust her cock harder and faster into the princess. However, very soon, she was about to reach her limit and while she yearned for it, it also worried her.

“C-Celestia...,” she said to her lover, “I-I'm...”

“It's alright, Twilight,” Celestia reassured her with a warm smile. “Don't worry. It's your first time, just let it go.”

The unicorn didn't need to be told twice. After several hard thrusts, the pleasure overwhelmed her and she released her semen into the princess.

Soon, it was over. Too soon for Twilight, who still felt like she failed her. It was silly, of course. It's not like the conception was dependent on whether Celestia gets an orgasm or not. But the whole situation was pretty anti-climatic.

“It's alright,” the princess repeated herself. “Nopony does well on their first time. And you never did it with a penis before. All things considered, you did very well.”

“Do you really think so?” Twilight asked, as she slid out of her. “I mean, it was over pretty fast. I barely satisfied you.”

“Hm... If it bothers you so much...” Celestia turned around, so that she lay on her back. Then she reached up to Twilight with her front hooves and pulled her down with her, embracing the unicorn tightly. “...Then maybe you should do it in another way.”

Now, Twilight smiled too and reached down with a hoof and slowly rubbed Celestia's pussy. Meanwhile, she stared at Celestia's belly. “Do you think it has worked?” she asked.

“Not even I can say for sure whether I'll get a foal or not,” the princess replied. “We can only hope for the best... and try to increase the chance.”

“And how do we do that?”

Celestia's smile turned naughty. “The same way we increase your skills with that.” She caressed her lover's softening cock, wet from her juices, with a hoof.