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It was the middle of the night and Aether and Paimon were sleeping quietly in their room in the Flagship.
Or at least one of them was.
Aether hasn’t been getting sleep in a long while, his mind was way too occupied with the urgent situation in Nodkrai. But most of all he missed his sister more than anything. He missed what he and his sister used to have.
You have to understand their relationship went beyond just being siblings, although people from Teyvat wouldn’t get that, but for him it was the most normal thing in the world.
He remembered how they would make out after a long day, or how their little arguments always ended with Aether coming inside of her. As his mind kept racing to images of his naked sister, he craved her touch more and more.
He was already hard and desperate and the only „person“ in his vicinity was his beloved Paimon.
Aether really appreciated how she is always there for him no matter what happens. As kind and forgiving as she is, she does understand his situation and would do anything to ease Aethers burdens.
It was just another night like the last few weeks were. Paimon had agreed to being his free use toy as long as it would make him happy.
So carefully not to wake her up, Aether lifts the blanket off of her body, revealing her small body and her cute pink pyjamas.
Her quiet snoring reassures him in continuing to undress her. Slowly he gets rid of her pants, noticing she isn’t even wearing underwear tonight. Her tiny slit still looks a bit red from Aethers needs the day before.
Pulling down his own pants, he lines his throbbing dick up with Paimons small hole. Forcefully he enters her in one go while holding her down on the bed with both hands on her shoulders.
Instantly he can feel the warmth and slickness that surrounds his cock, the pleasure making his brain go numb.
Half asleep Paimon tries to ignore what is happening. By now she’s gotten pretty used to Aether penetrating her at night.
Although it hurts the same every time, she tries her best not to scream. She wouldn’t want to upset him more than he is already.
Aether is lost in his thoughts, mindlessly pounding Paimons small pussy as he pleases while thinking of his sister. Small grunts and moans keep leaving his mouth.
Wanting a change of position Aether sits down and takes Paimon under her arms. Now pushing her onto his thick erection.
Like a flashlight he is moving her small frame up and down.
His eyes are closed as he imagines Lumine is riding him. The lewd sounds of her little butt slapping onto him is filling the room, along with Aethers continuous moans and heavy breaths.
He loves how Paimon can take him all in, despite his dick almost being the size of her whole body. Pre-cum is already dripping inside her.
„Oh god Lumine you feel so good“, he moans as he rolls his head back in pleasure.
„Fuck you’re gonna make me come sister“
The way he pushes Paimon onto him is getting messier and messier. He can’t help but additionally thrust his hips upwards, chasing the friction.
„Ahhh~ fuck yes“ he screams as he spurts deep inside Paimons tight hole, continuing to thrust as he rides out his orgasm. His many sperms are flowing directly into her womb making Paimon feel very uncomfortable.
„Oh yesss .. get pregnant with my seed“
Coming down from his high he only stops when every last drop has been drained from his balls.
As he lifts Paimon up some of his cum is dripping down her red cunt onto his softening dick.
Throwing her back onto the bed he apologizes for what he is about to do.
Leaning on top of her he takes his cock back in his hand and enters her pussy again, stuffing the cum that’s spilled out back inside with him.
When suddenly Paimon feels a warm fluid flowing into her uterus and she realizes that Aether is peeing inside her.
„What-“
But before she can complain what the hell Aether is doing he interrupts her.
„Ungh~ I love your little hole Paimon, you feel so good“
Blushing from the praise Paimon let’s him continue despite her hating this feeling. She just loves him too much.
Fast he fucks the piss inside her, pressing her down with his whole body, practically laying on top of her. The wet sounds combined with Paimons little whimpers turn him on so much he can’t help but get hard again.
Paimon can feel his erection growing inside her small cunt, stretching her out from the inside. The amount of pee together with Aethers big cock make her feel like she’s about to explode. She feels extremely overstimulated and doesn’t event realize that she is pissing herself, making an even bigger mess on their mattress.
Aether got so aroused from Paimon wetting herself that he came inside her again, mixing the pee with his sperm.
Both of them were panting hard and sweating profusely by now.
„Ugh i’m sorry Paimon i made a mess“ Aether said as he pulled out, letting all the fluids drip onto the bed.