(See? Imagine if you weren't following my advice, you wouldn't have this joy or worse, Sarah wouldn't have it. Don't all girls feel this happy?") Nigredo encouraged while Leo grabbed the blonde girl and put her in a full Nelson.
He did not refute that and lifted Sarah in the air, bending her like a pretzel. Wrapping his arms around her legs and holding them back with his elbows while his fingers locked behind Sarah's neck. Unable to move an inch as he got complete control over her body. Before she could even protest or groan, Leo pushed that throbbing fuck pole into her pucker.
They immediately felt the resistance, that hole clamping down and fighting against the intrusion. Sarah let out a groan of pain as her hands, unable to hold anything from that position, clenched their fingers.
"Fuuuuuuuck, you are not making this easy!" Leo barked at her and pushed harder, fighting for each single inch. Finally getting the head of his cock inside that ring of muscles.
"I am trying! It is not my fault that you have a baby arm grabbing an apple as a cock!" Sarah whimpered, tearing up as her body was trembling. It burned, there was no way to sugarcoat it, he was stretching her like nobody before had done it and that initial pain was slowly melting into pure pleasure.
"Yep, that is my fault!" Nigredo chimed in.
"Don't worry, I will fuck this asshole that it will get used to it in no time!" Leo reassured her before pushing deeper, inch by inch, until eventually, he was balls deep into his best friend's asshole. At that moment, both screamed in pleasure, trying to decipher this new sensation.
Sarah's back arched, her mouth open in an O shape while Leo gritted his teeth trying to muffle the moan to no avail. That asshole felt like each part of his cock was getting strangled with the ring at the end making special emphasis on the base of his manhood.
"Fuck! Your ass is tight!" Leo roared and just basked in this sensation for a moment.
"And you're fucking splitting me in two! It fucking hurts so good! Move! Please! Wreck your slutty broodmother's asshole!" Sarah squealed, finally getting her anal cherry popped.
("Fuck, why is her ass better than her pussy?") Leo asked Nigredo, trying to endure this and not cum in an instant.
("Natural-born anal slut, some girls are like that,") the alien answered while Leo pulled back slowly, feeling each millimeter of that hot and tight channel gripping his cock and then pushed upward again and again. Each thrust got a little bit easier as she learned who was its master now.
"You ass . . . why does it feel so good? Like . . . it is better than your cunt," Leo admitted while slowly getting faster.
"Is that a problem? You don't like your bitch being an anal slut that likes to get her asshole ruined?" Sarah teased him even if she was crying from the mixing feelings assaulting her brain.
"I guess I will have to breed your pussy and jerk off my cock with your back door from now on! Don't tell me that I never do something nice for you!" He barked back, his words almost muffled by the sound of his hips clapping that already red fat ass.
Leo moved faster, fucking her hole like an animal and driven by pure instinct to cum into a warm hole. Those big balls were already getting bloated again as they slapped nonstop that cunt and smeared pussy juices everywhere.
"You like this? Being part of my harem? I will fuck Barbara and Mila after I am done with you and we will be a big happy family!" Leo snarled in her ear, prompted by his own repressed desires blooming into the surface and nothing else.
"I love this! I am your cumdump! I am your personal onahole! Use me and the other girls whatever you want!" Sarah proclaimed before her words melted into incoherent moans as she was about to explode again.
Leo reached the peak of his speed again and Sarah's body went rigid, her asshole clenched down so hard that it felt like a cock ring firmly set on the base of his manhood. Both were about to cum just after a few minutes.
"Fuck! I am cumming! Cumming from having my ass fucked!" She screamed hard enough so it would bounce off nearby buildings and people would know what they were doing. Not ashamed for a single second to express her love to him. With that, her pussy squirted while the cock was buried to the hilt in her ass.
The feeling of her squirting while his cock was buried in her pucker was enough to make Leo come again. Fertile studcum traveled from his clenching balls to Sarah's colon, blasting her intestines walls with the thick, hot sap so much that some drops came out the friction point between the pucker and the length of his manhood.
For a few seconds, they stopped moving, with his cock twitching, her pussy finally calming and stopping blasting girl juices. Finally he pulled out with a wet pop leaving that destroyed hole gaping his seed.
It had turned into a perfect circle of stretched pink flesh that slowly tried to contract back to its previous state but it was impossible. From it, his manly seed leaked onto the floor, joining Sarah's girl juice soaking the gravel under them.
They collapsed on the ground, both unable to stand as they were fully spent this time. Needing a few minutes to be able to even talk.
("Should I get rid of that pesky refractory period as your next mutation? Also I could improve other stuff on your testicles. . .") Nigredo inquired inside his mind.
("Yes . . . I will need that . . .") Leo gave in to that petition, that was only a single girl and he was already against the ropes, more? That would need some superhuman level of stamina.