Kent had quite a month. One day, he was a normal guy, leaning towards the idea that he might be asexual. The next day, he was bonded to one of the prettiest girls on campus, Alia, who he learned was a half human, half futa alien. The cock between her legs sent psychic pleasures to his, making him feel anything and everything she did to hers as though it was his own. But her kind wasn't just there to please the men they bonded to. Unlike many futa pornos he had started watching, Alia's race had both a penis—which grew from what was once her clit—and a vagina.
Even weeks later, Kent couldn't believe his luck. But of all the things Alia had told him about her race—the psychic link, the initial bond, etc.—Alia forgot to mention one thing: blue moons.
Kent was in the library grading papers when his mind wandered. He and Alia had made the most intense love just that morning. He came twice inside her and once more when he pulled out just from the force of her multiple orgasms trying to hold onto his cock. His heart raced, and his blood started flowing naturally downwards at the memory of Alia's girl cock bathing her with her clear, sweet cum, the way her pussy sprayed just seconds before Kent's jizz burst forth that third time to mix with the cum on her belly. It was amazing.
"Focus, Kent," he breathed to himself. He shook his head, adjusted his jeans and squeezed away the slight hardness there as he moved onto another paper.
Then, he felt a hand on his cock, and he quickly looked down. Nothing was there, but he could definitely feel a hand there. Another hand came around it, and Kent's brow furrowed. His dick stirred and grew hard as the hands slowly caressed blood into it. He knew those hands. Any other guy would have felt guilty, but one of the cool parts about bonding with Alia was her relationship with Mara.
Mara was Alia's older sister, a half futa, too, but unlike Alia, Mara was a different gender of female. She couldn't bond with a male the way Alia did, and she had both male and female internal organs to impregnate herself with the help of one of the other genders. There were periods over a few years where Mara's body would go into sexual frenzy to attempt this. It had already successfully happened the year before.
Alia had explained not only this to him, but that she and Mara were in love with each other and had sex frequently! Though Alia was bonded to Kent, she made it clear that she would always be in love with her sister, and one other thing...
He had experienced this other thing not but two weeks into his relationship with Alia. Kent had come to their house one day, walking in freely—as he was part of the family now—and Mara quickly sat up and adjusted her sweats. Her face was flushed, and her breasts rose and fell hard, though she tried to breathe normally.
"Kent," she forced herself to say. She smoothed her curly black hair over one shoulder, then held onto it, crossed her legs, though that made her twinge. "What are you doing here so early? Alia won't be back for a little while."
"Sorry," Kent said, trying hard not to stare at Mara, just as beautiful and brown-skinned as her sister. Her nipples were swollen little buttons against her thin shirt. "I didn't really have much to do today and wanted to get some lunch started.
Mara smiled, but another twinge ran through her. "You're so sweet." She kept trying to control the twinges, but her body was betraying her state to him. "How are you and Alia..." She forced a cough. "Coming along?"
"Pretty well. I'm glad we're bonded." Mara forced another smile. Kent felt a stir in his pants but like Mara, he kept his hands busy, played with the strap on his bag.
"Great...Well, let me get out of your way." Somehow, Mara stood, but her legs shook, and she bent over for a moment with a strangled moan.
Kent stepped forward. He knew she was trying to hide her erection from him, but he refused to let her suffer. "Wait."
"No, no, it's fine," Mara breathed, tucking her hand between her legs like an embarrassed, teenage boy.
"No, Alia told me...She said when you need help, and she's not here...She told me to help you."
Mara looked at him, her dark eyes wide, and her face flushed. Then, she sighed with relief. "God, I love you guys."
Kent could tell that she meant it. He dropped his bag and helped her back to the couch. When he pulled down her sweats and panties, her cock flew up, purple and harder than he could ever imagine. Her pussy leaked and twitched impatiently. The sight tented Kent's jeans, stretching the fabric so that Mara looked down at it. She gasped, and her cock jumped as her pussy started clenching with an orgasm. Mara cried out and squeezed her legs together, rubbing her cock furiously, though nothing came out. Her male organ's cum was shooting into her, Alia had explained. Kent undid his jeans, and his cock fell out through his boxers' slit. He quickly pushed them down and climbed out of them. Mara seemed locked into the fetal position, humping the air in agony, but Kent took her legs, placed them on one shoulder, and plunged his cock into her frantic pussy. She was as tight as Alia, especially with her orgasm trying to crush his dick, but as he pushed inside, her walls relaxed, and Mara sighed so sexily that Kent got harder. He sawed into Mara in long, slow strokes, massaged her thighs with his hands.
"Kent, that's perfect," Mara moaned. She squeezed her breasts and arched her back. "Fuck, that's good."
Mara spread her legs, and Kent ducked to let her get her right leg to his other side. He lay over her and let her wrap her legs around his hips. Her dick lay limp on her stomach, but her pussy lubed and massaged his dick as she moaned and breathed. Kent let out a moan as his dick dribbled precum into his sister-in-law.
"I felt that," Mara said and bit her lip. "You're so hard. Fuck me, Kent."
"Mara..." Kent was shocked at her words but so aroused. His hips moved faster at her beck and call, and Mara thrust her hips to meet his. "Ohhh, fuck." Kent watched as her belly suddenly started to expand, first just a pudge, then a full roundness. Her cum was filling her up to try to get her pregnant. Mara rubbed her belly and pulled at her nipple. This was too much for Kent, and he growled as he came hard, thrusting even harder into Mara.
"Ah-ah-ahhhh!!" Mara cried. Her dick shot to full hardness again, and her pussy went back into a frenzy, milking Kent's cock for all he had.
He fell on top of Mara, and they tried to catch their breaths. Mara pulled Kent's face to hers and gave him a hungry, lust and love-filled kiss. Their tongues danced happily between their lips. Kent pulled away with a gasp and kissed her neck.
"This is so crazy," he breathed.
"Is it?" Alia giggled. He looked up with wide eyes at Alia standing beside the couch. She ran a hand through his hair and bent down to kiss him. Then, she kissed Mara, who moaned and moved her hand to the bulge beneath her sister's skirt. Kent felt her hand, and if he had softened inside of Mara, that was gone again. Alia stood straight and looked at Kent with a wicked smile. "Don't move."
Alia unsnapped her skirt and let it fall. She had no panties beneath, just her hard, purple girl cock. Mara wrapped her hand back around it and started to stroke it back and forth. Her hand resonated on Kent's cock, still buried deep inside of her, and he hardened some more.
