A Boy in the Chastity-Reversed World Doing "Mama-katsu" ~The Handsome Boy With Huge Cock Gets Devoured by Lustful Mamas~ - 9
Chapter 9: Bestiality Expansion Maniac Perverted Mama
Eight months into mama-katsu. My body had already been completely turned into nothing more than an “experiment subject.”
The app’s reviews had passed 10,000, and the tags included “#Yuu-kun Expanded,” “#Beast-level Cock,” “#Beyond Human Limits.” The women were no longer satisfied with just my huge dick—they wanted even more extreme “preparation” before they tasted it.
This time’s mama was, by far, the most dangerous pervert I had ever met.
‘Saori (40 years old – former trainer – bestiality expansion maniac)’
Her messages had been pure madness from the very first one.
‘Yuu-kun♡♡♡ I’ll pay 500,000 yen, so come right now, okay? It’s been my dream forever… a real bestiality-style play. I want you to thoroughly expand my holes to the limit with a proper horse dildo and dog dildo first, then finish me off with Yuu-kun’s murder weapon… My body can’t feel satisfied with a normal human cock anymore, so please completely destroy me with Yuu-kun’s dick♡ I want to spend one night and two days mating like beasts from morning till dawn♡’
500,000 yen. And one night and two days. The reviews were full of hellish comments like “Saori-san’s expansion is the real deal” and “Her womb dropped from the horse dildo.”
But my cock was already reacting. Just imagining sliding into that stretched-out, gaping pussy made pre-cum drip nonstop.
When I arrived at the designated secret villa (a former equestrian club facility), Saori-san was already in full-on aroused beast mode.
A red bondage outfit with a tail plug inserted—a super-perverted beauty. 171 cm tall, firm F-cup exploding breasts, a tiny waist flowing into massive hips and thick, plump thighs. Her long hair was disheveled, and her eyes looked exactly like a beast’s. A collar with a bell hung around her neck.
The moment I opened the front door, Saori-san crawled toward me on all fours.
“Haa… haa… You came… my new stud horse♡ Hurry… hurry and destroy my holes…”
She led me into the room (a former horse stable converted into a playroom), and it was a complete bestiality room.
A massive horse dildo (50 cm long, over 10 cm thick), a dog dildo (with knot), expansion pumps, enema injectors… On the walls, real bestiality videos played on loop—footage of women being fucked by horses and dogs.
“First, my preparation♡ Watch, okay? Watch how Saori’s holes get bestialized…”
Saori-san got on all fours and began inserting the giant horse dildo into herself.
Zubuzububububu!!
“Ngyiiiiii! Horse cock!! It’s breaking through my womb!!”
An unbelievable size of dildo buried itself halfway into Saori-san’s pussy. Love juices squirted out, soaking the floor.
While rocking her own hips, she forced the horse dildo even deeper.
Dosudosudosudosu!
“Hahiii! I want it pumped full like horse semen!!”
She used the injector next to her to pump fake semen (a huge amount of lotion) straight into her womb.
Byurururururu!
Her belly swelled up tight and round.
“Look… Saori’s tummy looks like it’s got a horse baby inside♡”
Next, she was already completely broken. Now came the dog dildo (with knot) for anal expansion.
Zubuzubuzubuzu!
“My ass!! The dog knot is inside!! My guts are getting fucked!!”
She worked both huge dildos in and out of her two holes at the same time. Saori-san came over and over, nearly passing out each time.
“I’ve… expanded them to the limit… Look? Saori’s holes are completely gaped♡”
Saori-san spread her holes to show me. Her pussy stayed open wide enough for two fists and wouldn’t close. Her asshole gaped openly too.
“Now… it’s stud horse Yuu-kun’s turn♡ Thrust that murder-weapon cock into these bestiality-ready holes and destroy them!!”
My giant cock was already at full, throbbing erection. I slowly inserted it into Saori-san’s stretched hole.
Zubuzubu… (but completely loose)
“Wow… there’s no tightness at all…”
“Hehe, right? But it still reaches all the way in♡ Go deeper—scrape my cervix!”
I slammed my hips down in one motion.
Zudon!!
“Naaaaaaaahhh!! Finally!! I can feel a human cock on my cervix!!”
Even though her pussy was far too stretched, her cervix had descended and clamped tightly around my glans.
Panpanpanpanpanpanpan!
“Feels better than the horse dildo!! Yuu-kun’s cock has the perfect shape!! It’s grinding my cervix so hard!!”
While she shoved the horse dildo into her own ass, Saori-san got her pussy ravaged by my giant cock.
Double-hole bestiality state.
“Beast!! Fuck me like a beast!!”
I went full beast mode and pounded her relentlessly.
I thrust so deep that Saori-san’s belly visibly rippled with each impact.
“I’m gonna get pregnant!! Not with a human baby—with a beast baby!!”
First creampie.
Dokudokudokudoku!
But because she was so stretched, the semen flowed back out in a gush.
“More!! Next is my ass♡”
This time I pushed my giant cock into her asshole.
Zubuzubuzubuzu!
“Higiiii!! Thicker than the dog dildo!! It’s reaching deep inside my guts!!”
Her intestinal walls coiled around me. Even though she was expanded, my thickness pushed her to the limit.
Panpanpanpan!
“It’s breaking!! My ass is really going to break!! But I’m cumming!! I’m cumming from beast anal!!”
Second shot—anal creampie.
After that, Saori-san kept alternating between the giant dildos and my giant cock.
In the middle of the night, she straddled a horse mannequin while I fucked her from behind.
“Simultaneous bestiality with a horse and a human!!”
Third shot, fourth shot…
By early morning, Saori-san was completely ruined.
Her holes gaped wide open and stayed that way, her belly swollen full of semen, her whole body covered in cum.
“Thank you… Yuu-kun… Now I’ve become a complete bestiality body… I’ll never be able to cum from a normal human cock again…”
Tears streamed down Saori-san’s face as she kissed my giant cock.
“Can I call you again? Next time I’ll prepare an even bigger dildo—not a real horse—and I’ll pay 1,000,000 yen♡”
I had become completely Saori-mama’s stud horse.
The mamas in this world never feel satisfied no matter how far they fall.
My mama-katsu was now stepping into the realm of beasts—.





































