Master's Cock Shitting Practice♥
"Huu... Rienna."
"Y-yes... masteer...♥"
Rienna barely managed to respond to Han Jin-seong's call as he paused his movements, letting out a lewd moan from the heavy foreign sensation filling her ass. Han Jin-seong looked down contentedly at her ass swallowing his cock, grabbing handfuls of her firm, plump cheeks and kneading them as he rocked back and forth.
Squelch-♥ Squish-♥
"Haaang...♥!"
With every thrust, her intestines—slick with intestinal fluids—clung tightly to his shaft, making obscene wet sounds as they grew even more aroused. He played with her ass like an onahole, gripping it with both hands, before opening his mouth.
"Feels good getting fucked in the shithole, doesn't it? Huh?"
"Yesss...♥ Getting it in the shithole again... feels sooo good...♥!"
With her bitch switch fully flipped, Rienna shamelessly affirmed his words, spitting out the crudest language without hesitation. If she hadn't known the feeling, she might have resisted. But now, utterly addicted to the unique pleasure of that defecation sensation, she couldn't help thinking that if she were ever separated from him and sent back to the elven homeland... she might end up masturbating her ass every day, yearning for Han Jin-seong's cock.
"Then... why don't you try moving on your own? Rienna. I'll stay still, so shake your ass like a slut, back and forth, and fuck yourself on it."
"Move... on my own...♥?"
Rienna repeated his words to herself. Move her own ass... to fuck Master's cock...? For her, who had grown accustomed to passively receiving pleasure, it was a command that brought a slight hesitation. Not having Master thrust into her herself, but seeking out the pleasure on her own. It felt like a trainer commanding an animal, and Rienna wavered.
Her bitch switch was on, and the fading pride of an elf was just starting to flicker back to life.
Spank-♥
"Hyaooook♥?!"
"What, don't like it? Should I pull out?"
With a snap of his hips, he thrust once deep before pulling out all the way to the tip, turning Rienna's mind blank once more.
"No... nooo...♥ I'll... I'll move... so don't pull out, pleeease...♥!"
It was far too sweet a temptation to refuse. The faint resurgence of her elven pride was shoved straight back into her core. Rienna felt anew the overwhelming presence of his unmoving cock stuffed deep in her anus.
The slightest movement—no, even just breathing—felt like it might make her burst with that lewd sensation, constantly gnawing at her reason. But in the end, Rienna squeezed her eyes shut and tensed her trembling thighs.
Just a little... so subtly no one would notice, she pulled her ass back, then pushed forward again.
Squiiiish-♥
"Hnggh...♥!"
Even that tiny motion sent her rectal folds rubbing against his massive shaft, drawing out a slutty moan. Rienna unconsciously swallowed hard.
Having tasted this defecation pleasure multiple times already, it was so sweet she couldn't refuse anymore. When she was just taking it passively, she could make excuses. It wasn't because she wanted it—Master was just forcing it in to satisfy his lust, raping her. The humiliation of being forced made it okay; she could lie to herself like that.
But now was different. This was her own willfully slutty act, shaking her ass for her own pleasure. Caught between lingering shame and desire, Rienna finally let it go.
Squiiiish-♥ Squiiiish-♥
"Haa...♥ Hng...♥ Heaaang...♥"
Slowly... clumsily, but steadily, Rienna's pale ass began to move back and forth. Willingly accepting the illegal intruder in her anus, savoring it with her shithole folds, indulging in the defecation pleasure... the movements of a bitch in heat.
"L-like... this...♥?"
Rienna couldn't help asking. Was this what Master wanted? Was she doing it right without mistakes? She craved confirmation.
Her delicate voice now carried only the tone of a bitch submitting to pleasure, seeking her Master's will.
Han Jin-seong praised her obedience, gently stroking and kneading her ass as he gave advice.
"Yeah, you're doing great. When you swallow it to the root and pull it out, slow down even more. It'll feel even better that way."
He didn't specify what would feel better. But Rienna understood perfectly, moving her hips even more eagerly.
She lowered her ass slowly. Squiiiish-♥
"Nngh...♥!"
His cock pushed all the way to the root, the glans plop-♥ pressing against the deepest part of her rectum. Rienna swallowed her leaking moan and held her breath in that position.
Squiiiiiiiish-♥
Then, agonizingly slowly—much slower than when taking it in—she lifted her ass. Maybe because she held her breath, the sensation of his cock withdrawing felt several times longer and clearer than usual.
Her anus spreading open, the thick shaft schloooorp♥ sliding out in vulgar friction. The intense defecation pleasure she craved—like straining to push out a massive turd—electrified her womb, squeezing out lewd juices.
A pleasure utterly different from normal orgasms, raw and filthy defecation bliss overwhelming her.
Squiiiiiiiish-♥
"Ooooh...♥ Nngooooh...♥!!"
Pssshhh- Her thighs quivered, her vision blurring. Lewd honey squeezed from her womb trickled down her pussy lips and sprayed out.
A gentle yet intense defecation climax filling her body and womb. Rienna realized it. This pleasure... the good feeling of shitting... she could create it herself.
As long as she had Master's cock, she could feel this defecation bliss anytime.
Squish-♥ Squiiiish-♥
"Ohhoook─♥! Ooooh─♥!"
Rienna's movements grew bolder. No more clumsiness or hesitation. She learned how to maximize the pleasure, how to amplify this defecation sensation, shaking her ass back and forth with slutty squelch-squelch motions.
Deep to the root, then out as slow and thick as possible...
Squiiiiiiiish-♥
"Oook...♥ Ohhhgoook─♥!"
Now spilling slutty moans close to whorish chants, Rienna found her perfect rhythm and fucked her hips with abandon.

Smack-!
"Heang...?♥!"
Han Jin-seong spanked Rienna's ass—focused solely on her shithole—and whispered teasingly.
"Rienna, I get you're feeling good. But pay some attention to Master too, yeah? Time to act all slutty and coquettish."
Slutty coquettishness. Memories of the first day flashed in Rienna's mind. Losing her reason to pleasure, combining all the crude words he'd drilled into her to flirt shamelessly.
Throwing away all dignity and pride as a woman, becoming a mere bitch to please her Master, coquettish toward the stud. The first time was hard, but the second was easy. Having already flirted enough to please him once, Rienna recalled it and smacked her pretty lips.
"Master's cooock...♥ So gooood♥ Fill Rienna's shithole... with lots of shit using Master's cock...♥ Haaang...♥!"
Squiiiiish-♥
"Shitting with Master's cooock...♥ Hngg♥ Feels sooo sooo good...♥ Rienna's shithole pussy is so haaappy...♥!"
Shame had long since evaporated. Unbelievably crude, filthy words poured from Rienna's mouth without filter.
What Han Jin-seong started had become Rienna leading... cock-shitting time.
Pleased with her coquettishness, Han Jin-seong reached down and patted her pussy like praise.
"Good girl. Rienna. Here's your reward: pussy pats."
"Hng...♥ Yesss...! Thank you... Maaaster...♥!"
Face buried in the bedsheets, Rienna shivered with joy at the praise. Master's hand gently patting her pussy felt so good. Just light taps, but to her now, it stimulated every nerve ending like a powerful aphrodisiac.
The presence of his cock filling her shithole sharpened, mixing with the depravity of shaking her ass after abandoning all womanly pride, amplifying her pleasure.
Pat- Pat-♥ Squiiiiish-♥
"Ah♥ Ah♥ Aang♥ So gooood...♥ Praise me more...♥ Rienna's shaking her ass good, right...?♥ Practicing shitting with Master's cock... so haaard...♥ Hnggg♥!"
The haughty elf was gone, replaced only by a bitch craving Master's praise, confessing her own sluttiness.
Like a child wanting more approval, Rienna shook her hips even harder. Calling herself Rienna from her own mouth, begging for his love and attention like a kid.
The moment shaking her ass became practice, she accepted its purpose: pleasing Master and chasing pleasure.
Sweat-matted hair sticking to her cheeks, face crushed into the sheets making breathing hard—none of it mattered. Only the sensation of his massive cock ravaging her shithole.
Rienna shook her hips more desperately, more urgently, toward the climax before her eyes.
Squish-♥ Squish-♥ Squelch-♥
"Ng♥ Ah♥ Haang♥ Heeng♥"
The lewd sounds echoing in the room stimulated her ears. Rienna forgot even to control her pace, surrendering to instinct and slamming her ass back and forth like a maniac.
Clap-♥ Clap-♥
"Ngeuk♥ Uuung♥"
Each time it hilted, Han Jin-seong's pelvis smacked her firm, child-bearing ass, her butt flesh rippling like waves.
Clap-♥ Clap-♥
"Ngeuk♥ Ehk♥"
He wasn't thrusting himself, so the sounds weren't huge, but it was enough for Rienna. The impact of hilting deep and the intense defecation pleasure as it withdrew, spreading her sphincter, assaulted her relentlessly.