Chapter 624: You’ve Grown Up So Much

The moment Cassius felt his sister’s hand wrap fully around his bare cock, he shivered so violently his entire body jerked forward.

His skin was already overstimulated.

Every nerve ending raw from her teasing touches, her breasts dragging against his back, her breath on his ear, her fingers roaming like she owned him.

Now the sudden, direct heat of her soft palm closing around his shaft sent a shockwave through him.

He melted backward against her chest, head falling onto her shoulder, trembling for a completely different reason than before.

And the towel, already precariously knotted finally gave up and slid off his lap entirely.

The moment it did—Aqua’s breath caught.

There it was.

In her hand. In full, unobstructed view.

And gods, it was worth every second of waiting.

She had glimpsed at his penis before, always from a distance, always fleeting.

That first accidental walk-in when she arrived, the hard outline pressing against her in the dark one night, the bulge under his towel earlier today.

Because of that she had known it was massive.

But seeing it up close, holding it, feeling its weight and heat and pulse…

…this was something else entirely.

It was magnificent.

The swollen, flushed head throbbed angrily at the tip, already leaking a thick, clear bead of precum that rolled slowly down the underside.

The shaft itself was obscenely thick, veins bulging and pulsing like ropes under the skin, making it look less like a human organ and more like some primal, terrifying weapon forged for destruction.

It was long enough that even with her hand wrapped around the base, there was still room for another palm above it.

The whole length curved upward slightly, heavy with arousal, veins standing out in stark relief.

And beneath it, hanging low and full were his balls.

Large. Impossibly full. So heavy they swayed with the slightest movement.

Made for flooding a woman.

For claiming.

For breeding.

Aqua stared at it like it was the most beautiful artifact she had ever conjured with magic.

She had seen wonders as an archmage—celestial phenomena, ancient runes glowing with power, dragons in flight, forbidden spells that could rewrite reality.

But one of them compared to this.

This, her baby brother’s cock pulsing hot and heavy in her palm was the most magnificent thing she had ever laid eyes on.

She squeezed experimentally.

And she realised it was so heavy.

So heavy her slender wrist strained just holding it upright. It felt like gripping a warm iron bar—unyielding, alive, radiating heat and power.

If this had belonged to any other man—any stranger—she knew her body would have reacted on pure instinct.

The sheer masculine potency of it would have triggered something primal: slickness between her thighs, tightening in her pussy, an ancient genetic urge to be filled, bred, claimed by something built for exactly that purpose.

But this wasn’t any other man.

This was Cassius.

Her little brother.

Her sweet, shy, trembling baby boy whose cock was currently throbbing desperately in her hand while he shook with embarrassment and overstimulation.

That thought alone sent a fresh wave of heat crashing through her.

She began to stroke—slow glides from root to tip, thumb circling the sensitive frenulum on every upstroke.

“I’m really surprised, little brother.” She murmured, voice thick with awe and affection. “Truly. I never imagined my sweet little Cassius would grow up to have something so…impressive.”

She twisted her wrist gently on the downstroke, making him gasp.

“To tell you the truth, I was already shocked when I first came back and saw how tall you’d gotten.”

“Back then you were still shorter than me, my tiny shadow always trailing behind.”

“And then suddenly…there you were. Towering over me. So handsome it hurt to look at you. Your face had changed—gone from that adorable baby roundness to sharp angles and a jaw that could make any woman weak.”

“I was so proud. So proud of my little brother turning into someone who could make entire rooms fall silent just by walking in.”

She kissed the curve of his shoulder—soft at first, then dragged her tongue along the muscle there before sinking her teeth in possessively.

Not hard enough to break skin, but enough to leave a faint crescent mark.

“But it wasn’t just your height or your face.”

She continued, voice dropping to a husky whisper.

“You changed everywhere. Just look at this body…”

Her free hand roamed up his chest again, nails lightly scraping over his pecs.

“These shoulders, so broad and strong. This back—look at how wide it is, how every muscle shifts when you breathe.”

“These arms…these legs…everything about you screams man now. And to think—”

She squeezed his cock harder on the next stroke, making him whimper.

“—all of this, every single inch of muscle, every pound of strength…you built it for me.”

She kissed the bite mark she’d just left.

“You trained so hard. Pushed yourself to the edge every day. Just so you could stand in front of your big sister and protect her.”

“Protect me, the archmage who can level a castle with a thought.”

“Oh, Cassius…you have no idea how intoxicating that is. How much it pleases me. How much it makes me want you.”

Her strokes sped up, twisting at the head on every pass.

“And you didn’t stop there, did you?” She lifted his cock slightly, admiring it like a trophy. “No, no, no. You changed here too. Down here.”

She cradled his balls in her other palm—feeling their impossible weight, the way they shifted and tightened at her touch.

“The last time I saw your penis we were children. It was so tiny. So cute. Like a little pink caterpillar hanging there.”

“Honestly, if I didn’t know better, with how small and pathetic it was, I might’ve mistaken you for a girl. Your little clit-cock was adorable. But now…”

She stroked from base to tip again.

“Now look at this monster. This thick, veiny, terrifying weapon you grew.”

“Caterpillars are supposed to turn into butterflies, but yours turned into this.”

“This absolute beast of a cock.”

She giggled delightedly as she jokingly added,

“Did you train this too? Weights? Stretching? Some secret exercise routine just for your penis? How did you make it grow so big? So thick? So…perfect?”

Cassius shook his head frantically, voice cracking.

“N-No…nothing like that…it just…happened…”

Hearing this, Aqua’s eyes sparkled with mischief and something darker.

“Really?” She leaned in until her lips brushed his ear again. “I know it’s ridiculous. Impossible, even.”

“But…what if it isn’t?”

She slowed her strokes, torturously deliberate.

“What if the reason your cock grew so massive…so thick…so hard…is the same reason the rest of you did?”

She squeezed the base.

“What if you grew this monster down here…to make sure no other man could ever compare?”

“To make sure you’re the only one who could ever satisfy me. Please me. Pleasure me. Fill me.”

Her voice dropped to a sultry whisper.

“Is that why it’s so big, Cassius? So no one else could ever take me from you? So you could claim your big sister completely with this fat, perfect cock?”

“Is that what you wanted? To own me? To breed me? To make sure I could never leave you again?”

Cassius’s breath hitched. His hips jerked forward into her hand despite himself.

“I—I don’t—”

She didn’t let him finish.

“Maybe.” She purred, mimicking his earlier shy tone. “Maybe there was a part of you that wanted me to stay. Wanted me to belong to you.”

“Wanted to fill my belly so full of your seed that I’d have no choice but to come back to you. Over and over. Forever.”

Her pace quickened again—stroking faster, tighter, slick with his precum.

“Isn’t that right, baby brother? Isn’t that why this cock is so huge? So it can ruin me for anyone else?”

Cassius looked at her and he knew that with the manic state she was in, she would not take no for a answer and would continue to urge him to say what she wanted.

So, he just decided to save himself the trouble and give in.

“…Maybe.”

He whispered, voice barely audible.

“I…I don’t know. But maybe…there was a part of me that wanted you to stay. To never leave for the capital again. To always be my big sister.”

“And maybe…maybe part of me wanted to make sure…no one else could ever take you away.”

Hearing this, Aqua’s entire body ignited.

Her smile became radiant, dangerous and ecstatic all at once.

“Good boy.” She breathed. “Such a good, dirty little boy.”

Her hand sped up—faster, tighter, slick with his leaking precum.

“My greedy little brother…craving his big sister so badly he grew this massive cock just to keep her. Just to trap her. Just to fill her up so full of his cum that she’d never be able to leave again.”

“That even if she went to the ends of the earth, she’d always come crawling back—belly swollen with his child, so she could never abandon him.”

“Isn’t that right, Cassius? Isn’t that what you wanted?”

Cassius didn’t answer. Instead he was struggling to hold back and looked at her with a desperate gaze saying,

“Aqua—something’s—something’s coming—please—”

But she didn’t slow down.

“No, baby brother, no, let it come. Let it go. This is what you’ve been waiting for, isn’t it? For your big sister to milk this perfect cock dry? To take every drop you’ve been saving up for her?”

She twisted her wrist on the upstroke, thumb pressing ruthlessly against the slit.

“Come for me, Cassius. Come for your big sister. Show me how badly you want to own me. Fill my hand—fill anything—just come!”

And that was when he broke.

With a choked, desperate cry, his cock pulsed violently in her grip.

“Schlurp!♡~ Splish!♡~ Splat!♡~ Squish!♡~”

Thick, hot ropes of cum erupted from the tip, powerful and violent.

The first shot hit the mirror across from them with an audible splat.

The second and third followed—splattering the glass, dripping down in heavy streaks.

His cock itself pulsed and jerked in her grip, unloading everything he had while Aqua milked him through it.

When it finally ended, he slumped against her—panting, shaking, dazed.

Aqua stared at the ruined mirror, then down at the twitching, still-hard cock in her hand.

Then she smiled—the biggest, brightest, most dangerously happy smile he had ever seen.

“Good boy.” She whispered.

She spun him around towards her and then kissed him.

“Mmm!♡~ Mmm!♡~ Kiss!♡~ Mmm!♡~ Slurp!♡~”

Her tongue plunged into his mouth—claiming every inch—while her arms wrapped around his neck, pulling him flush against her naked body.

She devoured him.

Sucked on his tongue.

Bit his lower lip.

Drank every shaky breath he gave her.

When she finally pulled back—just enough to breathe—her lips were swollen, her eyes glassy with possessive love.

“My brother…My baby brother.” She whispered against his mouth. “All mine.”

And Cassius, who was shattered and overwhelmed—still leaking the last weak spurts against her thigh, could only tremble in her arms.

Completely, irrevocably hers.

Source: Webnovel.com, updated by NovelKeep