Developing the Other Hole
After being trained by her son and daughters, their mother had awakened an even deeper masochistic streak than before. She had reached the point where she no longer needed to be taken herself — simply watching Heetae enjoy Dohee and Seohee was enough to leave her trembling with arousal.
Thanks to that, the family settled into an even more peaceful daily rhythm, spending their days steeped in pure, unfiltered obscenity.
A few days later, Seohee called him aside, saying she had something she needed to tell him in private.
"So why'd you call me over alone?"
"Mm…… I figured it was about time……"
Seohee rummaged through her desk drawer and pulled out a whole pile of anal training toys.
"Mom and Unnie…… need it too……"
"They…… both know about this?"
"Yeah…… Mom and Unnie both…… want it."
"Hmm…… All right. It's about time anyway."
He had always planned to develop both of their asshole the same way he had Seohee's. The only reason he'd put it off was that he hadn't felt any particular dissatisfaction or lack in their current life. But contrary to his expectations, both his mother and Dohee had been watching Seohee get taken in the ass and secretly craving the same training for themselves. Since he never brought it up, they'd simply stayed quiet — until they couldn't hold it in any longer and sent the message through Seohee.
"Then…… we start tomorrow."
With that, the schedule for his mother and Dohee's development was set. Since it was the weekend, he took his time preparing the toys with Seohee's help, planning to work through it at a leisurely pace.
The next day.
All three mother and daughters waited naked in the living room, faces bright with anticipation. As preparation, all three had already been thoroughly cleaned out with enemas. When Seohee informed them they'd have to do it every day from now on, Dohee made a faintly reluctant face — but she didn't refuse.
"All right, Seohee. Get up and bring the toys."
"Okay🤍"
Seohee, clearly excited, fetched the large assortment of anal development tools she'd prepared in advance. Dildos, anal plugs, anal beads, lube — everything laid out neatly by size. He intended to get them developed enough to use within the weekend, which meant the schedule would be fairly aggressive.
Normally it took well over a week of gradual work before a woman could take anything properly. Rushing it usually meant serious pain, so most women had to go slow. But his mother and Dohee were masochists — the pain that came with accelerated training would register as pleasure. That was according to Seohee, the experienced one. She'd finished developing herself in just three days, and she insisted the level of pain she'd felt then would feel like pure ecstasy to Mom and Dohee.
"Fufu🤍 So now we get to become toilet-slave assholes just like Seohee🤍"
His mother was practically vibrating with anticipation, kneeling on the floor with an obscenely eager smile. In her case, she had deliberately left herself completely undeveloped, wanting to experience being trained from scratch. She felt no resistance at all to starting from zero.
"If we're doing this, just hurry up…… *gulp*"
Dohee, by contrast, was visibly tense, fidgeting and hesitating — but her interest was just as strong, and she wasn't about to refuse. She'd asked for this herself. She might be snippy now, but the moment the switch flipped she'd be acting like a bitch in heat. That much was obvious.
"Good. Both of you, get on all fours and spread those assholes."
"Yes~🤍"
"Okay🤍"
His mother and Dohee dropped forward at once, hips raised, and pulled their own ass cheeks apart with their hands. His mother's deep-pink asshole, still completely untouched, twitched and fluttered as if begging to be fucked right then and there.
Dohee was nervous, but no less eager — she spread herself even harder than their mother, forcing her tightly clenched hole to open just a little.
"All right…… first we loosen you up……"
When it came to developing an asshole, Seohee was more of a specialist than he was, so he gave her the go-ahead. Without the slightest hesitation, Seohee buried her tongue in their mother's hole.
"Hnnngh🤍 T-tongue first…?🤍"
His mother had been licked there once before, but nothing had touched her ass since. The sensation was practically brand new, and her whole body shuddered.
"Keep spreading properly…… Mom……"
The feeling of her asshole being toyed with made her grip go slack; her hands started to slip. At Seohee's command she forced the strength back into her fingers and pulled herself open again.
"Mmph🤍 *slurp*🤍 *schlick*🤍 Mmmphh🤍"
"Haahn🤍 My asshole feels…🤍 Hnngh🤍 so weird…🤍🤍"
It was a completely different sensation from her pussy, and his mother was already opening her eyes to a new kind of pleasure. She hadn't even been properly developed yet, and already this sow of a mother was realizing her asshole could serve perfectly well as a second cunt.
"Look at you gushing already. No wonder they call you a masochist pig-bitch."
"Nnhh🤍🤍"
His verbal abuse only made her feel it harder. Just from having her asshole lightly sucked, she came — a little spurt of pussy juice and a full-body shudder of her hips.
"Pwah~…… Mom's asshole…… has talent……"
Even after being degraded like that, their mother had climaxed from nothing more than having her hole licked. Seohee decided development was going to be easy, glanced over at the two of them, then moved on to the still-tense Dohee.
"Y-you're seriously going to lick me… there?!"
Watching their mother get eaten out had gotten Dohee worked up, but the shame was just as intense. It wasn't just being developed — it was having her little sister lick her asshole. She hesitated for a second. But they'd already started. There was no going back.
"Then, Unnie…… here I go…… mmph🤍"
"Hngyaaah?!!?🤍🤍"
Unlike with their mother, whom she'd immediately tongue-fucked, Seohee started by simply lapping over Dohee's hole once, giving her a chance to relax.
Dohee cried out at the sensation she'd never felt in her life — but she made no real attempt to pull away or stop it.
*Lick, lick, smooch*🤍
Seohee kept her tongue outside at first, tracing the rim and the surrounding skin, coaxing Dohee's tension to melt away.
"Hnnn🤍 Haahn🤍 Haaah🤍"
After about a minute of that, the tightly shut hole gradually softened and opened just enough to show a path. Seohee pointed her tongue and slowly pushed inside.
"Hyaah🤍 Hyaah🤍 Haahn🤍 I-I don't know this feeling…🤍🤍"
Something entering a hole that had only ever been an exit sent Dohee's hips trembling violently. The opening was still so small only a tongue could fit — and eventually it would have to stretch wide enough for his cock. She couldn't afford to struggle this much already.
"*Slurp*🤍 Then I'll do it properly🤍"
"Oooooohhh!!🤍🤍"
At first she'd only used her tongue lightly to ease the tension. Now, for real development, Seohee ravaged the inside of Dohee's asshole the same way she had their mother's. A place no one had ever touched — a place Dohee herself had never even explored — was being utterly violated by her little sister. The sow-switch flipped almost instantly. Dohee's body shook as thick strands of pussy juice dripped steadily onto the floor.
*Pssshhhhhh!!*
"Pwah~🤍 Unnie likes it too……"
Dohee came hard, flooding far more girl-cum than their mother had and making a filthy mess of the floor.
She'd told herself that even if her pussy was worthless and hypersensitive, her asshole would be different. Turns out her ass was just as much of a cheap slut-hole.
"Dohee's asshole is trash too, huh."
"Heeeeh🤍 Th-that's not trueee…🤍🤍"
Her mouth denied it, but the slack, drooling expression on her face made it obvious just how hard she'd felt it. She didn't want to admit that both front and back were completely useless, hypersensitive cunts — but climaxing this fast from a brand-new pleasure was undeniable proof sitting right in front of her.
"Now that you're loosened up, we'll start with these🤍"
Having personally sucked and licked both their assholes open, Seohee slathered a small set of anal beads with a generous coat of lube and handed them over.
This was where the real anal development began — starting small and gradually stretching them wider.
*Schlick*
"Hnnnh🤍🤍"
"Hngyaaahn🤍🤍🤍"
The anal beads, being used for the first time, began sinking into both his mother's and Dohee's assholes at once. Longer than Seohee's tongue, the beads slid slowly into their rectums — but Seohee had done her job well. They went in without resistance until only the ring handles remained outside.
"Hnnn🤍 So this is what it feels like🤍"
"Heeeeh🤍 My asshole feels so gooood🤍🤍"
His mother savored the new sensation, hips quivering. Dohee, sow-switch fully engaged, wore a vulgar smile as she drowned in the pleasure radiating from her hole.
"These…… feel even better…… when they come out🤍"
Watching the two of them, Seohee offered the tip as if teaching him. Since it was their first time, he took hold of both ring handles and slowly pulled.
"Oooohh🤍🤍"
"My asshole's cummiiinggg🤍🤍"
*Pssshhhh!!*🤍🤍
As the beads slowly emerged, a completely different kind of pleasure hit them. His mother shuddered and moaned; Dohee came all over again. She clearly had even more talent for feeling things through her asshole — she gushed more pussy juice than before and climaxed purely from her rear hole.
"Hnnn🤍🤍……"
Watching her mother and sister orgasm, Seohee's own nipples stiffened hard and her pussy started dripping. She'd already shown some talent as a queen when they'd trained their mother before; she seemed to thoroughly enjoy tormenting them like this too.
He didn't feel like leaving Seohee out, so he pushed the anal beads back into his mother's and Dohee's holes and had Seohee get down on all fours.
"Watch closely. This is what I'm going to train the two of you up to."
As a demonstration, he picked up the massive set of anal beads Seohee owned. They were in a completely different league from the ones he'd just used on his mother and Dohee — the kind of size and thickness only an expert could handle.
"Hnnn🤍 Haahn🤍"
Seohee's fully developed asshole swallowed every last bead of that enormous string, putting on a show for her mother and sister. A preview of exactly what was going to be done to them.
*Pop! Pop! Pop! Pop! Pop! Pop!*
"Oooooooohhh🤍🤍🤍"