Sunset Shimmer’s eyes opened as she groaned. She’d been laying down for what felt like hours upon hours without a moment of sleep. Her body felt too…awake. She knew there was only one thing she could do for it but she always felt terrible every time she did it. What felt like a pulse through her entire body however convinced her. One last time. It didn’t matter that she’d said this the last ten times. She would keep to that this time.

She walked down the hall, glancing at the pictures on the walls as she did. It was strange. So many happy pictures. At the end of the hall was the door she was looking for. A hanging plaque hung from the front which read “Sunset”. It was so odd as she walked in and looked at what was basically herself sleeping in bed.

It’d been three months since she had been brought into the home of her human world counterpart. Two months since she got used to being called shimmer and one month since she started…this.

Shimmer stepped quietly towards Sunset’s bed, listening closely only to hear her soft breathing. She was still sleeping. Good. Sunset had seemed to be a heavy sleeper so that wasn’t too surprising. With a gulp and deep breath, Shimmer took her pants down, the very thing which had kept her up, springing to attention. A large, leathery, brown equine cock pulsing with her heartbeat with matching swollen orbs below.

“I’m Sorry Sunny” She said quietly as she slipped in bed with her double, shivering as her tip rubbed against Sunset’s silk pajama covered back. “Oh, Celestia I’m horrible” She whispered to herself as she reached down, gently pulling Sunset’s pajama pants down the best she could while Sunset slept on her side before a shift in her sleep made it possible to take them down to her knees

Shimmer took a deep breath as she pushed her needy cock downwards and exhaled as she pushed the fat tip against Sunset’s soft pussy lips, her precum slicking it up easily. Another pause as she heard Sunset take a deep breath, her back arching slightly before she went back to her normal sleeping position.

With a gulp, Shimmer pushed forward, both she and Sunset gasped as her fat tip spread those soft lips and pushed its way deeper and deeper. When Shimmer had first done this she was afraid that she’d hurt Sunset. That the pain would wake her up but she had happily discovered that Sunset could apparently naturally take it all. Maybe not with ease but she could and still sleep through it.
Another gasp from Sunset as Shimmer pushed half of her cock inside. She was always so tight. But at the same time always felt so accepting, so inviting. As though her pussy was constantly trying to pull Shimmer inside. A wonderful mixture of a vice, unrelentingly holding her inside and like a vacuum trying to pull her in deeper at every chance.

“Ngh~” Shimmer grunted as she pushed forward, aiding Sunset in adding more and more depth. While she was in her room, Shimmer hated the mere thought of what she was about to do but now her mind was mostly thinking of going deeper and deeper. Barely holding onto her control. Barely stopping herself from starting to thrust. She knew that she would lose her control soon. It always happened. The feeling of Sunset’s soft wet pussy massaging her oversized cock with each inch it pulled inside itself.

A few more moments, a few more inches and then, that blissful moment happened. That moment when she found herself fully engulfed within her adoptive sister. It was such a wonderful thing. That tightness, the wetness, it was so nice, so soft. It was just so nice that Shimmer knew that she couldn’t hold back any longer.

Sunset let out a mixture of a gasp and moan as Shimmer pulled back, her long shaft almost feeling as though she was pulling Shimmer back with her. Shimmer wasn’t even able to pull out a full half way before she slammed back in, unable to tell if her gasp was her own or if it belonged to Sunset.

It didn’t matter as Shimmer started to repeat the action as she wrapped her arms around the sleeping girl, her hands groping her sister’s breasts as her thrusts continued in no real particular pattern. Shimmer didn’t have the control for that. All she had the control for was to continue rutting. “Ngh. S-Sunny~” She moaned out softly as she felt the pressure start to build up. She knew she wouldn’t last much longer. She knew that just like every night when she did this that she would soon cum inside. Bloating her sister out with it.

And just as Shimmer had expected, she came and just as always, it was far from a little. More and more cum she forced into Sunset as she felt what she expected was Sunset’s orgasm. Her body was tense and quiet hard moaning was coming from her lips as rope after rope of cum was shot into her, her belly starting to bloat outwards as her womb was filled and overfilled with Shimmer’s cum, some of it starting to seep out around Shimmer’s cock and pool below them.

Soon Shimmer’s orgasm finally tapered off, but she didn’t pull away quite yet. As horrible as she started to remember what she had just done was, she wanted to perhaps feel like it was more than just lust by wrapping her arms around Sunset in a hug instead of simply groping her as her cock shrunk, falling from Sunset’s body.

“I’m sorry…” Shimmer said quietly with a small squeeze before kissing her neck softly and with a deep sigh she pulled away and walked back to her room, her head hung in shame.

As Sunset’s door closed, her hands traveled down, cupping together in the pool of cum and bringing her cum filled hands to her lips, drinking it down as though it was water. “Mmm~ You’re forgiven.”

Author's Note

So...I started this out a lot more enthusiastically and ended sorta...less. I feel like it's far from being what it could be but I wanted to at least finish it before I just threw it away. So at least people would get it.

Also, yeah. The title and lyrics are based on the beatles song XD

I'm also VERY tired.

Nini all. I go sleepy now.