IV. A Lesson in Submission

"Have you ever sucked a cock before?" Demetria asked.

"No, Sire."

"Then your first time will be mine." She gripped her cock at the base and brought the head to Cassia's lips. "Open."

Cassia opened her mouth involuntarily overwhelmed by the sight of her Sire Mother's formidable presence.

The head of Demetria's cock was warm and slightly salty, with a musk that was unfamiliar but not unpleasant. Cassia closed her lips around it experimentally, and Demetria groaned, a low, satisfied sound that vibrated through the room.

"Just the head for now," Demetria instructed. "Get used to the weight of it on your tongue. When you're ready, I'll feed you more."

Cassia obeyed, her jaw aching slightly at the stretch. Even just the head of her sire mother's cock was substantial, filling her mouth in a way that made breathing through her nose a conscious effort. She tasted pre-cum, a bitter-salt flavor that coated her tongue, and felt her own cock twitch in response.

"Good," Demetria murmured, her hand coming up to cradle the back of Cassia's head. "Now, take a little more. Let it fill your throat."

Cassia tried, but her gag reflex was stronger than she expected. She coughed, pulling back, and Demetria allowed it, wiping the spit from Cassia's chin with her thumb.

"Easy," she said, and there was something almost tender in her voice. "Maidenhead wasn't built in a day, and neither is a good cocksucker." She pulled her cock away from Cassia's mouth and shifted position, guiding her daughter to lie back on the couch. "For now, I want to see your cunt."

Cassia's legs parted instinctively, revealing the wet, swollen folds of her pussy. Demetria settled between her thighs, her alpha's cock pressing against Cassia's inner leg, and looked down at her daughter's most private place with an expression of genuine admiration.

"You have a beautiful cunt daughter. The symmetry of the lips, the coloring... it's perfect." She observed.

Cassia had never thought much about the sexual attraction of her pussy before, but hearing Demetria describe so it made her clench with fresh arousal. "Thank you, Sire."

"Don't thank me yet." Demetria lowered her head, and Cassia felt warm breath against her most sensitive flesh. "I'm about to show you how betas are made."

Demetria's cock nudged her entrance, and for a moment, Cassia forgot how to think.

The head pressed against her, not entering, just resting there, a promise and a threat all at once. Cassia's pussy clenched around nothing, **** for the fullness she could feel hovering just beyond reach.

"Please," she heard herself whisper. The word came from somewhere deep, somewhere primal, bypassing her conscious mind entirely.

Demetria's laugh was low and rich. "Please what, daughter? Use your words. Alphas know what they want and how to ask for it."

"Please fuck me."

"Fuck you where? Your cunt? Your mouth? Your arse?" Demetria rolled her hips, and the head of her cock slipped through Cassia's slick folds, nudging against her balls before sliding back to her entrance. "I thought I taught you the importance of specificity. There are those outside of these walls that would use such ambiguity against you."

Cassia's hands gripped the edges of the couch, her knuckles white. Her own cock lay hard against her stomach, leaking precum onto her navel, but she barely noticed it. Every nerve in her body seemed to have been redirected to her pussy, where her sire mother's cock teased at her opening.

"My cunt," she gasped, her voice sounding alien. "Please fuck my cunt."

"As you wish." Demetria pressed forward, and Cassia felt herself stretch around the impossible thickness. Even just the head was overwhelming, spreading her open in a way that bordered on pain, but the pain dissolved almost instantly into something else. Something that made her toes curl and her back arch.

"Look at me," Demetria commanded. "Eyes open. I want to see your face while I'm taking you."

Cassia **** her eyes open. Demetria loomed above her, blonde hair falling forward to frame her angular face, brown eyes dark with hunger. Her cock continued its slow advance, inch by inch, filling Cassia in a way she had never imagined possible.

"Do you feel that?" Demetria asked, pausing when she was halfway seated. "That's my will pressing against yours. Not taking it. Just... testing. Feeling."

Cassia did feel it, a pressure that wasn't physical, a presence in her mind that seemed to pulse in time with the cock stretching her cunt. It should have been terrifying. Instead, it was intoxicating.

"More," she blushed. "Please, Sire, I need more."

Demetria gave it to her, thrusting forward in one smooth motion that buried her entire length inside her daughter. Cassia screamed, not in pain, but in the sheer overwhelming shock of being so completely filled. Her cunt had never held anything larger than her own fingers, and now it was stuffed with ten inches of alpha meat.

"Breathe," Demetria instructed, holding herself still. "Your cunt is spasming around me. If you don't breathe properly, you might pass out, and I need you conscious for this."

Cassia sucked in air, pert breasts heaving. The fullness was unlike anything she had ever experienced, a pressure that radiated outward from her core, making her thighs tremble and her eyes water. And beneath the pressure, pleasure. Building slowly, like water rising behind a dam.

"That's it," Demetria murmured, beginning to move. Slow, shallow thrusts at first, letting Cassia adjust to the rhythm of being fucked. "Your cunt is so tight, daughter. So sweet. I can feel every ridge, every clench. It’s almost like you were made for this."

"No. I was made to be an alpha!" Cassia gasped defiantly, remembering herself, even as her hips began to move in counterpoint to her sire mother's thrusts.

"Hmmm, perhaps…" Demetria mused, and her next thrust was harder, faster, driving a moan from Cassia's throat. "Every futa is biologically designed to be fucked, daughter. The question is whether you'll be the one doing the fucking, or the one taking it. And right now, you're taking my cock. You're taking it so well."

The pleasure was building now. She felt a rising tension in her balls, a throbbing of her cock that demanded attention. She reached down to touch herself, needing to relieve some of the pressure, but Demetria caught her wrist.

"No. You come from my cock or you don't come at all."

"But-"

"I said no." Demetria's voice brooked no argument. She drove deeper, harder, her cock pounding into Cassia's cunt with a rhythm that was both brutal and beautiful. "You need to learn what it feels like to be dominated by an alpha. This is it. This is me taking what I want from your body, and you giving it to me because you have ****."

Cassia sobbed, tears leaking from the corners of her eyes. The pleasure had grown almost unbearable, a constant thrumming that seemed to fill her entire being. Her cock ached, untouched, precum dribbling onto her stomach in a steady stream. Her testicles drew up tighter against her body, full and heavy and **** for release.

"I'm going to seed you," Demetria said, her rhythm becoming erratic. "I'm going to fill your cunt, and you're going to feel it. Every spurt. Every drop. And when I'm done, you're going to thank me for it's lesson."

"Yes," Cassia moaned. "Yes, please Sire, I need it, I need your seed-"

"Then take it."

Demetria's hips snapped forward one final time, burying herself to the hilt, and Cassia felt her sire mother's cock pulse inside her. The first spurt of cum was hot, flooding her channel with its liquid warmth. The second followed immediately afterwards, and then the third, and after that Cassia lost count, lost time, lost everything except the sensation of being filled.

Cassia came.

Her own cock erupted without being touched, spraying ropes of white across her stomach and chest, but she barely noticed. Her cunt was clenching and unclenching around Demetria's still-pumping cock, milking every last drop of seed from her sire mother's balls. Her body shook with the **** of her orgasm, her vision narrowing, her mind going blank.