The Fellatio Duel: My Sister Versus the Professor
"I'll go first."
It was Cordelia who threw down the gauntlet first in this long-awaited inaugural Arwen Fellatio Tournament. She looked at Emilia and asked, her stiffened expression betraying a hint of nervousness. "Will that be all right, Miss Emilia?"
Emilia shrugged with a light chuckle. "Hehe, of course it's fine. If you want to go first, then please, go ahead." Her gesture and tone overflowed with effortless confidence. She had clearly noticed Cordelia's tension. Since this was Cordelia's very first time performing fellatio, her nerves were perfectly understandable. By contrast, her rival Emilia was practically a professional at it.
Until just three months ago, Emilia had known next to nothing about male anatomy beyond the basic fact that men had penises. But over the three months she'd spent with me, she had been reborn as a proud, fully-fledged woman.
Cordelia rose from the bed in front of Emilia and knelt before me.
"Are you sure you can handle this, Cordelia? If it's too much pressure, you can watch Emilia first..."
"...I'm fine. My friends already gave me the general idea of how it's done."
As her older brother, I suddenly became very curious about exactly which friends had taught a virgin how to suck cock. I'd love to see their faces at least once. Cordelia muttered to herself as if recalling their kind advice. Listening closely, it sounded like they had told her to start by stroking it with her hand. I wanted to offer her a tip or two, but... I couldn't. This was a competition. I couldn't do anything that might disadvantage Emilia. Besides, Cordelia's pride was on the line.
I pressed my itching lips together and waited for my little sister's fellatio.
Cordelia gently grasped my soft cock with one hand. The plush flesh between her fingers tickled the shaft. Then she slowly began to stroke it. Her hand glided up and down from the base, and my half-hard length responded. Once it seemed to be going as expected, Cordelia moved on to the next step.
"Oppa, shall I lick it now?"
Cordelia lifted her head slightly as she spoke. Her face was flushed with embarrassment, and her warm breath tickled my cock. The tip of her trembling tongue touched the V-shaped tendon beneath the glans. After that first electric contact, a wet, warm sensation completely took over.
She continued her shy caresses while staring straight into my eyes, as if asking, How is it? Her soft, moist tongue clung to the head and swept across its entire surface. Then she slowly scraped the sensitive ridge with the tip of her tongue, like a child savoring a lollipop.
"Slurp, slurp. Oppa's cock is twitching♡"
Staring at my twitching length with heated eyes, Cordelia soon swallowed my entire cock in one smooth motion.
"I'll enjoy this meal♡"
The room filled with the wet, intense sounds of suction—slurp, slurp, slurp—and the lewd noises of her drinking down the mixture of saliva and precum as if it were warm broth.
"Kgh. Not bad at all for your first time. You're incredible, Cordelia."
The soft lips wrapped around the base and the wriggling tongue coiling around my shaft made my lower abdomen tighten on instinct. Cordelia answered with a smiling glance, never stopping her devoted service. She began sucking me with even greater passion.
With my cock still buried in her mouth, she shook her head vigorously. The motion was so intense it felt like she was riding me in cowgirl position. It was a perfect mouth-pussy. Thanks to her lewd throat sucking on my glans and urethra in place of a cervix, I quickly reached the edge.
"I'm going to cum in your mouth, Cordelia. Drink every drop."
She only shook her head faster, as if to say she was ready. At the same moment, I erupted, flooding my little sister's mouth-pussy with hot semen. Thick ropes gushed out, filling her completely.
When I pulled out, Cordelia gulped it all down with audible swallows. After three deep throat contractions, she stuck her tongue all the way out to show me she'd swallowed everything.
Wiping her lips, Cordelia said, "Phew... I nearly suffocated. How was it, Oppa?"
"It felt amazing. You might have a real talent for pleasing men, Cordelia."
She poked my cock lightly with her index finger. "Hmph. Not men—only you, Oppa. Still... I'm glad you enjoyed it."
With a triumphant look, Cordelia stepped aside.
"Now it's my turn, isn't it?"
Emilia immediately took the vacated spot. After watching Cordelia's surprisingly strong opening performance, her earlier relaxed expression had mostly vanished. Cordelia, now sitting beside me with her legs crossed, spoke in a voice full of confidence.
"Hmm... Oppa's cock must be soft after cumming from my fellatio. Maybe you should wait a little before you try?"
Cordelia might not realize it yet, but my cock wasn't nearly that weak. Naturally, Emilia—who had drained hundreds of loads from me—knew that fact well. Cordelia's clumsy provocation had only helped Emilia regain her composure.
"No need. I'll begin right away."
Brushing off the taunt coolly, Emilia took my cock—still slick with Cordelia's saliva—into her mouth without hesitation. Her skilled tongue immediately went to work.
Her tongue swirled like laundry in a washing machine. The surface, slightly rougher than Cordelia's, swept over the entire glans and sent chills racing down my spine.
"Ung? Aren't you coming on a bit strong from the start?"
"Slurp. I need to show her what real fellatio looks like." Emilia answered with a relaxed smile. That reply had been quite bold. She was clearly enjoying my twitching reaction while throwing a deliberate provocation at Cordelia. As intended, Cordelia's face stiffened slightly.
Emilia pushed forward, taking me all the way to the back of her throat. She engulfed the glans deep inside while her soft tongue coiled around the base. Then she sucked with everything she had—slurp, slurp. It felt like my cock had been swallowed by a vacuum cleaner. The overwhelming pressure that made me worry whether it might break sent raw pleasure piercing straight into my brain.
Wet, squelching sounds filled the air as she worked me, and Emilia smiled with her eyes.
Hmm... She noticed.
Unlike earlier when I'd released the moment the urge hit, I was now desperately holding back. Part of me worried that cumming too quickly would wound Cordelia's pride, but more than that, I simply wanted to savor Emilia's incredible fellatio a little longer.
Even that had its limits. Her tongue relentlessly teased the sensitive urethra and the tendon beneath the glans until semen had already risen to the tip.
"I'm cumming, Emilia. Kgh."
The instant I warned her, the suppressed load exploded. Thick, hot semen poured down her throat in heavy pulses. Emilia swallowed every drop with audible gulps, the motion of her throat clearly visible.
"Thank you for the meal, Arwen. Your semen always tastes so fresh no matter when I drink it."
Emilia scooped the final drop from her lip with a finger and sucked it clean. Cordelia watched her with eyes full of envy and jealousy, muttering something about how many times she must have sucked my cock.
It seemed Cordelia already knew who the winner was.
Ahem. Still, I need to declare it properly.
"You were both incredible. Having the empire's greatest beauties serve me like this—I could die without a single regret."
After that formal but sincere compliment, I looked back and forth between them.
"The winner of this contest is... I'm sorry, Cordelia. It's Emilia."
"Hehe, of course it is."
With a victorious smile, Emilia offered her hand to Cordelia. "It was a good match, Miss Cordelia. Your fellatio truly showed how much you love your brother."
Cordelia, who had been frowning, finally relaxed her expression and accepted the result. "...Not at all, Sister Emilia—you were amazing. The face Oppa made... But I won't lose next time."
At some point she had started calling her "Sister." Cordelia took Emilia's hand, and the two women shared a handshake as passionate as athletes after a hard-fought game. The sight filled my heart with warmth. Even the white, dried traces of semen on both their lips looked beautiful.
"Then, as promised, I'll go first, right?"
Emilia giggled as she lay face-down on the bed. She assumed the same cat-like posture as before and gently shook her hips. It looked exactly like a dog eagerly begging its master for a reward after a good training session.
...I completely forgot.
While my brain had been pickled by pleasure intense enough to feel like my cock might be pulled off, I'd forgotten the entire point of the contest: deciding who would get penetrated first.
Will my stamina even hold up? If we start having sex now, I'll need to cum at least five times per person to satisfy them both.
I regretted not bringing along some of the Viagrak I'd stashed in the lab. But excusing myself now to fetch stamina potions wouldn't exactly look graceful.
Father, please lend your unworthy son some of your strength.
Praying that my father's blessing—which had allowed him to handle five actresses at once—would descend upon me, I approached Emilia.
"Emilia, I'm putting it in. Which hole do you want?"
She answered in a confident voice that showed zero shame. "My anus. Please thrust Arwen's magnificent cock deep into Emilia's rectum."
Ever since I'd developed her ass, Emilia had become utterly addicted to anal sex. She had completely forgotten her old lectures about how it wasn't a reproductive organ.
"A-anus? You're going to put Oppa's cock in your anus? What if it hurts..."
Naturally, Cordelia—who had only just lost her virginity—looked utterly flustered by Emilia's lewd request.
Emilia seemed to find her adorable. "Hehe, thank you for worrying. I was scared at first too, but thanks to Arwen's gentle teaching, I discovered a whole new world of pleasure. I'm sure Miss Cordelia will come to enjoy it someday as well... Haaah?!"
My cock cut off Emilia's vulgar evangelism. The saliva-slicked glans pushed past her twitching entrance. The hot, wrinkled walls of her rectum welcomed me like a long-lost son, squeezing tightly.
In a voice raised an octave by pleasure, Emilia cried out, "Th-this is it! The feeling like my insides are being pulled out♡ Hngh, fuck me harder!"
I slapped her bouncing ass with my palm while buried inside her. "What are you saying about the pleasures of anal in front of my innocent little sister who just lost her virginity?"
"You're so mean, Arwen—you're the one who taught me... Haaang♡"
Even as she complained with her mouth, every sharp slap against her ass made her anus clench deliciously around my cock. The base of my shaft felt like it might be squeezed into a dent.
"Are you getting excited from being spanked right now?"
"N-no... Ahng♡"
As I began thrusting, the hot rectal folds scraped along my length.
"I'm going to cum inside your belly."
"Haaauuung♡ Yes, I'm cumming too! Fill my ass and make me cum♡"
At the same moment I erupted, Emilia's hips shook violently in orgasm. When I pulled out, a wet pop was followed by a thick stream of white semen flowing from her ass. It was a filthy yet intensely erotic sight.
The moment my session with Emilia ended, Cordelia—who had been waiting with an impatient, almost desperate expression—rushed forward.
"I'll clean it for you, Oppa."
Without the slightest hesitation, she took the cock that had just been buried in Emilia's ass into her mouth. Her lips and tongue thoroughly licked away every sticky trace.
"Slurp. Since it's going inside me next, I have to clean it properly."
Cordelia smiled with satisfaction at the sight of my cock glistening with her saliva. She climbed on top of me in cowgirl position.
"I don't have the courage to take it in my ass yet, so I'll have to be satisfied with my pussy for now. But later you absolutely have to teach me that anal sex thing too, okay?"
...I won't actually die from sex and get a game over, will I?
Watching the two women and their endless sexual appetites, I felt an uneasy feeling creep over me. It was the first day of the presentation meeting, and for some reason, a sense of impending doom kept sinking deeper into my chest.