Chapter 163: Developing the Older Sister’s Anus in Front of Her Younger Sister

‘Unni…….’

Tilf wanted to call out to Reina immediately, but her mouth was gagged, preventing her.

Even in this situation, Tilf’s wet pussy was dripping with love juice.

Jolts!

Suddenly, Jinwoo reached out and firmly gripped her firm buttocks.

The mere touch sent shivers down her spine, an overwhelming pleasure.

Jinwoo gazed at Tilf fondly for a moment before seating her in a chair he had prepared.

Her older sister Tilf’s pussy and buttocks were fully visible.

Precisely facing the bed.

Only after securely tying her hands and feet, ensuring Tilf couldn’t escape this situation.

Jinwoo leisurely walked towards Reina.

Slap!

“Aang!”

Jinwoo slapped Reina’s large buttocks with his palm.

Her plump buttocks flaunted their characteristic jiggle and movement along with a lewd sound.

Simultaneously, as if proving Reina’s arousal, her pussy dripped with love juice.

Anyone could see she was eagerly awaiting a man.

A perfect bitch.

“You waited well, Reina?”

“Haa, haa! Yes! I waited anxiously for Jinwoo-nim, wondering if anyone might come looking. Please, do something about my aroused elf pussy!”

Her wrists and ankles bound together, her hips arched high to fully expose her intimate parts.

Reina, whining in a lustful voice, looked incredibly lewd even to her younger sister, Tilf.

If she took off the blindfold she was wearing, what a lewd expression would she have?

She couldn’t even imagine such a face on her sister, who was always so elegant and dignified.

No, she could hardly believe the scene unfolding before her eyes was real.

That even her own sister, not someone else, had succumbed to the pleasure this man provided.

“Heeuht!”

But Reina had no idea her younger sister was watching her current state.

A mere gentle stroke on her buttocks by Jinwoo made her tremble with pleasure.

“As I said, today we’re going to develop your anus. And don’t just climax carelessly if I fuck your pussy, okay?”

“Ah… Yes…….♥”

Jinwoo took out the love gel mixed with an aphrodisiac he had used on Tilf earlier.

After coating his fingers thoroughly with the sticky substance, he gently spread Reina’s anus and inserted his index finger.

“Ah, heuut…!”

Reina, lying face down, tensed her buttocks.

It was understandable, as an unfamiliar intruder had entered an orifice that shouldn’t normally accommodate anything.

Tilf had experienced anal development before Reina.

And though she hated to admit it… those fingers felt unbelievably good.

The sensation of something entering a place it shouldn’t.

Initially unfamiliar, the feeling quickly turned into pleasure with Jinwoo’s touch.

Even though it felt just okay when she touched herself directly.

The moment Jinwoo touched it, it transformed into a pleasure-sensitive spot, no less than her pussy.

“Fuuh… Eung……”

However, Reina seemed to be experiencing direct anal stimulation for the very first time.

She didn’t show any particularly pleased reactions.

Watching this, Tilf felt a flicker of anticipation.

Her sister, always so elegant and composed, might not be completely dominated by the man before her even in this state.

Of course, if it were the old Tilf, she would have pitied another woman just for that, but…

She now understood firsthand how difficult it was just to resist the pleasure.

After all, her anus had already been breached, and her clit completely trained.

“Alright, I’ll touch your pussy now, Reina.”

Jinwoo said that and took a dildo out of his inventory.

The moment Tilf saw it, she flinched involuntarily.

Having been fucked and sucked multiple times already, she knew.

That thing was exactly the same size and shape as Jinwoo’s cock.

Seeing it again, it looked incredibly menacing.

And now, it even started vibrating with a low hum.

‘N-no way, that’s cheating.’

Something that large, and it even vibrates?

There was no way any woman trained by Jinwoo could withstand that.

Perhaps because her body remembered the pleasure?

Tilf unconsciously swallowed her saliva.

“Ugh, Ugh…”

But Reina herself was completely unaware of the situation.

Naturally, being face down and blindfolded.

The development of a different area while her senses were blocked made Reina both more tense and more excited.

Jinwoo generously applied love gel to the dildo as well, softening it, then gently inserted it into Reina’s pussy.

“Hwaaaang!”

At the same time, a lewd cry burst from Reina’s lips.

The dildo, coated in smooth gel, went in surprisingly easily despite its size.

Perhaps Reina’s pussy was already accustomed to that size.

The dildo, inserted deeply, vibrated with a low hum, stimulating Reina’s pussy.

The dildo stimulating the pleasure points in a peculiar way made her feel unbelievable pleasure.

“Aang! Hwaang! J-Jinwoo-nim? What is this…?!”

“How is it? Feels good, right?”

“Hng! W-wait a moment, please stop…! The stimulation is too intense… Haaaang!”

Even though Reina climaxed, Jinwoo naturally didn’t stop.

Instead, he repeatedly inserted and withdrew the dildo, exciting Reina as if having sex.

“Aang♥ Hng♥ Aang♥”

Had her body and mind, initially flustered, adapted to the pleasure?

Reina’s moans gradually shifted into sweet sounds that would naturally arouse a man.

‘Unni looks like she’s enjoying herself.’

Although she couldn’t see her expression due to the blindfold,

she could fully sense the joy conveyed through her face.

“Aang♥ Hwaang♥ Hwa♥”

While giving her pussy ecstatic pleasure with the dildo.

Jinwoo continued to stimulate the inside of her anus with the finger he had inserted earlier.

Squish, squish, squish!

A lewd sound echoed from there, no less than from her pussy.

And after a little more time passed, changes began to occur in Reina.

“Hng! J-Jinwoo-nim… Something feels different…. Heeung!”

The training Reina was currently undergoing was similar to what Tilf had received.

If you stimulate the already accustomed pussy while simultaneously touching the anus.

A woman’s body soon begins to mistake the source of that pleasure.

Once the pleasure nerves become connected in such a way, there’s no going back.

Her body remembers the sensation regardless of her will.

“Eung! Hwaang! J-Jinwoo-nim, I think I’m going to… Hwaaaah….♥”

As Reina’s anus became more and more sensitive.

Jinwoo’s movements with the dildo gradually slowed down.

Conversely, his finger in her anus moved more vigorously.

The pleasure threshold began to shift.

“Eung! Hwaang! Aah!”

At the same time, she instinctively realized.

She could climax if she focused the sensation on her buttocks right now.

Of course, this was a trap Jinwoo had set, but…

It was also an irresistible temptation for a woman heated to the brink of climax.

By stimulating her pussy less and her anus more intensely, making her anxious without letting her climax.

“You can climax now, Reina.”

“Hwaaang♥”

By touching her anus and allowing her to climax.

He transformed that area into a complete pleasure zone.

‘Ah…….’

Tilf sighed inwardly as she watched her sister climax through her anus.

Even her sister couldn’t resist such persistent training and pleasure.

“Haa, Hwa…….”

Reina seemed slightly disoriented from her first anal climax.

But Jinwoo didn’t stop, continuing to thrust his finger into her anus.

“Eugh! J-just a moment… I just climaxed, so I’m sensitive… So… Haak! Eugh!”

Now, Jinwoo wasn’t touching her pussy at all.

He was just relentlessly thrusting his finger into her anus.

Although the caress itself was no different from the beginning,

as time passed, Reina’s reactions clearly changed.

“Aang♥ Hwaang♥ Aang♥”

The voice of a woman completely lost in pleasure.

Reina was even wriggling her buttocks, acting flirtatiously to gain greater pleasure.

“I’m going! Aaaang!”

Finally, Reina climaxed solely through her anus.

Only then did he withdraw his finger, revealing her slightly parted anus twitching lewdly.

“Your anus feels good too, doesn’t it?”

“Yes, yes… Thank you for teaching me this pleasure…..♥”

The sight of her respected older sister, presented shamelessly with her buttocks raised, falling to the man’s hand.

Normally, she should have been angry…

‘Why am I getting more aroused…?’

Was it because she was left like this, unable to climax earlier?

Instead of being angry at the man who did this to her precious sister.

Her own horny body was even jealous of her sister climaxing under the man’s touch.

“Ah, Ugh.”

Jinwoo watched the scene with satisfaction and then untied the cloth binding Reina’s wrists and ankles.

In that state, he assumed a doggy style position and then.

He thrust his cock directly into the anus he had just developed.

“Hwaaang!”

Although it was her first time experiencing such a huge cock in her anus.

Reina’s anus quickly adapted and began spewing pleasure.

Bang! Bang! Bang!

“Your anus is gripping my cock tightly. Feels good, Reina?”

“Aang! Hwaang! I-it feels good! It’s a place that shouldn’t normally take anything, but it’s happy with Jinwoo-nim’s cock!”

“That’s good. Then let me show you properly how happy you are.”

“Yes, yes?”

Reina didn’t understand what he meant until the very end.

Jinwoo then removed the blindfold she was wearing.

“…….Huh?”

Reina’s face showed bewilderment as she saw Tilf, naked and tied up, dripping love juice before her eyes.

Immediately, not just her face but even her ears turned bright red.

“Wh-what is this… Hwaang! W-wait a minute, ah-eung!”

Reina tried to retort immediately, but…

As he thrust his cock, moans mixed with pleasure burst out again.

“Hng! Eung! Aaaang!”

Soon after, Reina shamelessly climaxed again through her anus, right in front of her younger sister.