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EP.63 Competing to See Who Develops Faster
"Ooooh!"
When I pulled out the large anal beads from her ass all at once, they slid out smoothly with a popping sound. Mom and Dohee, who could only take small beads, looked at Seohee's stretched asshole with envy and arousal.
Seohee, perhaps a little faint, was twitching as she lay face down.
"I'll keep training you until you get like this, so look forward to it."
"Yes, Master, please develop Mom's asshole as much as you want."
"M-me too, I'll stretch my asshole so Oppa can fuck it with his cock."
Seeing Seohee's fully developed hole motivated Mom, who eagerly begged to be trained, and Dohee, whose switch had flipped, was wagging her ass like a bitch in heat.
"Here, make Mom's big, filthy asshole into a pussy."
"Use Dohee's asshole as a pussy too!"
They pressed their asses together, both wanting to be developed. Mom's large ass and Dohee's firm, athletic butt collided, the flesh rippling and tempting me.
"First, you need to get to the point where these go in easily."
Thrust, thrust, thrust!
"Ohh, ohh, Mom, my asshole feels weird."
"Ohh, I'm cumming from my asshole again!"
Since it was just the beginning of their training, Mom wasn't really feeling it yet, but Dohee, with her weak ass, was already reacting intensely.
Pshuuuut
"I came from my asshole, haa..."
Since Dohee was the first to feel it, I took out even thicker beads than before and put them in her ass.
"Ohh, something even bigger went in!"
"Dohee went first... Son, I can do it too, so put something bigger in me!"
With the larger beads inside, Dohee climaxed just from that and seemed to collapse, her strength gone.
Seeing that, Mom, feeling competitive, begged to be stretched like Dohee even though she wasn't really feeling it yet.
"Isn't it too much for you?"
"I can do it. I'm a masochist pig who even feels it in her asshole."
Since Mom insisted, I put beads as thick as Dohee's into her as well.
"Ohh, this is thick."
"Should I take it out?"
"No, it's fine. The slight pain actually feels good..."
Though it was still a bit much for her, Mom actually dripped pussy juice from the pain.
"You're both... fast..."
Seohee, now recovered, looked at the beads in Mom and Dohee and nodded in satisfaction.
"I'll train Unni."
"Then I'll train Mom. Want to bet who develops faster?"
"Sure... If I win..."
Seohee whispered her desired reward in my ear if she won, and I agreed. We each started our own training. The deadline was the end of the day, and the winner would be whoever could take bigger toys and feel more pleasure with their asshole.
"Alright, since we made a bet, let's get started, Mom."
"Yes, hurry and train me as much as you want, son."
So, we ended up making a bet. I wouldn't lose anything if I failed, but as their master, my pride wouldn't let me lose, so I planned to train Mom thoroughly.
Of course, I didn't expect to get them all the way to Seohee's level in one day, but I intended to make significant progress.
"How's this?"
Thrust, thrust, thrust, thrust!
"Ohh, hng, I'm feeling it, I can feel it in my asshole!"
Just being trained was a huge turn-on for Mom. When I started going faster, she only got more aroused and responded even more.
Even though the beads had been hard to take just moments ago, as I pounded them in, Mom started dripping pussy juice and climaxed lightly, her hips twitching.
"Wow, Mom, how are you clenching the beads so tight after such a short time?"
"Hehe, I'm a masochist pig, so please train me even more so I can serve your cock with my asshole."
Aside from the bet, Mom was eager to serve with her ass and wanted to be trained as soon as possible.
"Alright, then let's train even more efficiently."
"Hng..."
Looking down at Mom with a sly smile, she licked her lips in anticipation of what was coming.
"Unni... Unni..."
While I trained Mom, Seohee had to develop Dohee. Judging by the situation, Dohee seemed easier to train, so Seohee got started quickly.
'If I win...'
Thinking about the reward she'd get from me if she won, Seohee's pussy started dripping.
But Dohee, having just climaxed from her ass, was still out of it, twitching and giggling stupidly.
Press
"Huh?! Seohee?!"
To snap her out of it, Seohee stepped on Dohee's face, finally bringing her back to her senses, though she still seemed confused.
If Dohee goes into full heat, she becomes harder to train, so Seohee made sure to keep her focused.
"If you pass out, you'll be punished."
"What do you mean-Ohh!!"
Seohee didn't answer, just grabbed a small dildo and shoved it into Dohee's pussy. Since she was already soaking wet, it slid in easily.
Thrust, thrust, thrust, thrust!
Thrust, thrust, thrust, thrust!
"Ohh?! Wait, what is this-Ohhh!!"
Seohee alternated between the dildo and the anal beads, thrusting them in and out. Even though it was embarrassing to be treated like this by her little sister, Dohee was only more aroused.
"Ohhh!!"
Dohee, weak to pleasure, climaxed quickly, squirting all over from her sister's hands. Even as she came, she clenched tight around both the dildo and beads, refusing to let them go.
"Five more times..."
"I'll die..."
Seohee used the same method she'd used on herself: stimulating both holes at once to make Dohee feel double the pleasure.
Dohee was already weak to pleasure, and with her ass now sensitive too, she felt twice as much. Seohee didn't stop, and Dohee kept cumming, eventually passing out from the overwhelming pleasure.
"Hoo... Now it really begins."
Looking at her unconscious sister, Seohee smiled and reached for the next toy.
"Oh, Seohee's doing a good job. As a mom, you can't lose to your daughter, right?"
"B-but any more... hng..."
Mom, on all fours, was sweating and trembling. I held a big syringe (without a needle) and was injecting white liquid into her ass. Five liters had already gone in.
Her belly wasn't cartoonishly swollen, but it was a little distended and firm.
"I'll stop here for now. Can you handle it?"
"If I relax, hng, it feels like it'll all come out right now..."
Despite her discomfort, Mom's face was twisted in arousal. Even though she could lose it all at any moment, she was dripping pussy juice.
"Then should I plug it up?"
"Guh! It's too big!"
I was about to plug her ass with an anal plug that was quite thick-probably the biggest she could take today.
"Should I not plug it, then? Are you going to let it all out in front of everyone?"
"Haa, haa, sorry, please, plug me, please plug Mom's asshole with the anal plug..."
No matter what, Mom would rather be plugged than humiliated by losing control in front of us.
'With this, I'll win~'
I picked the thickest plug I thought she could take today, figuring even Dohee wouldn't be able to handle this size.
Thrust!!
"Ooooh!! It's in, it's all in!"
It was short but very thick, and though it would normally be painful, the urge to go masked most of the pain.
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