After Marrying 5 Yandere Wives, I Obtained a 10,000x Return System

Author note: Only starting part is R-18, you can skip to middle part.

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"Nn..."

The moment I touched her, she let out a small moan.

I paused for a second.

Then, I slowly started pushing in.

"Ahh..."

I could hear the pain in her voice as I went deeper.

Then—I felt the resistance.

Her hymen was stopping me.

I took a deep breath and looked into Aurielle’s eyes.

Her face was a mess of lust and pain.

"Bear it, darling," I whispered.

She nodded, her mind already hazy.

SLAP.

The sound of our bodies meeting echoed in the quiet room.

"Hk...!"

Aurielle cried out, her fingers clawing at the bedsheets.

I felt it break.

I felt the warmth of her blood.

Slowly, I pushed all the way in.

"Haa..."

I let out a long, satisfied breath.

I was finally deep inside her.

Her walls were so tight, clinging to me like they never wanted to let go.

I gasped at the sensation.

Aurielle looked lost in it, her eyes glazed over.

I started moving, picking up the pace.

"Right there," she breathed.

I increased the speed.

"Mmh..."

"Ah..."

"Haa..."

"Nn..."

She took a sharp inhale.

The pain was still there, but the pleasure was winning.

I didn’t slow down. I couldn’t.

"Aurielle... you’re so tight."

I said it loud, my voice thick with lust.

She just nodded, moaning my name.

SLAP.

SLAP.

SLAP.

The sound of flesh hitting flesh filled the air.

I thrust harder and faster.

"I’m close... I’m so close!" she cried out.

I pushed even more.

"Mmph..."

"Ahh...!"

Aurielle finally broke, her body shaking as she reached her peak.

I slowed down for just a moment.

I could feel her juices coating me.

Then, I felt my own end coming.

"Aurielle, I’m coming."

She didn’t answer; she was already in heaven.

PUCHI.

With one last, deep thrust, I unloaded everything inside her.

"Ahhh..."

I sighed, feeling the weight leave my body.

THUD.

I dropped onto her, both of us gasping for air.

The room smelled of sweat and sex.

I looked at her face and saw a small, satisfied smile.

It made me happy.

---

"Chirp... Chirp..."

The sound of birds singing outside the window slowly pulled me from sleep.

I opened my eyes and instinctively reached toward my right side.

But there was nothing there.

My hand touched only the slightly wrinkled bedsheet.

I blinked several times before finally waking up completely.

"Aurielle already left..."

A small smile appeared on my face as memories of last night surfaced in my mind.

The moonlit room.

Her flushed face.

The warmth of her body against mine.

For a moment, I simply sat there grinning like an idiot.

Then I shook my head.

"Focus."

I climbed out of bed and took some water.

After cleaning myself and putting on fresh clothes, I sat cross-legged on the floor.

Today’s goal was simple.

Get stronger.

I opened my inventory and took out a small vial.

Inside was a strange liquid mixed with green and golden colors.

The Body Tempering Potion.

I stared at it for a few seconds.

Then uncorked it.

"Gulp."

The potion slid down my throat.

At first, nothing happened.

Then—

BOOM.

A wave of burning heat erupted from my stomach.

"UGHHH!"

My entire body trembled violently.

The heat spread through every vein like molten lava.

My muscles tightened.

My bones creaked.

My blood seemed to boil.

Veins bulged across my arms as the medicinal energy rushed through my body.

I gritted my teeth.

Sweat instantly covered my forehead.

The pain was intense.

It felt as if countless tiny hammers were repeatedly striking every bone inside my body.

Crack.

Crack.

Crack.

Faint sounds echoed from within me.

The medicinal energy continued moving.

My muscles became denser.

My blood circulation accelerated.

Even my internal organs felt as though they were being tempered by invisible flames.

Every weakness was being broken apart and reforged.

I clenched my fists so hard my nails dug into my palms.

Yet I refused to scream.

Five minutes passed.

Then slowly—

The pain began fading.

The burning sensation disappeared.

In its place came an overwhelming feeling of strength.

A refreshing current flowed through every part of my body.

I opened my eyes.

A faint layer of black impurities covered my skin.

Meanwhile, my physique had visibly changed.

My muscles looked more defined.

My body felt lighter.

Stronger.

More explosive.

I could even feel mana naturally flowing through my veins.

A grin appeared on my face.

"Yes!"

I clenched my fist.

Power surged through my arm.

"I finally became a true knight."

"Body Tempering Realm."

"First Temper."

Excitement filled my heart.

Without hesitation, I grabbed the second potion.

Unlike ordinary people, I didn’t need to worry about unstable foundations or toxin accumulation.

System rewards were perfect.

"Gulp."

The second potion entered my body.

The familiar heat returned.

Five minutes later—

Second Temper.

Then another.

Third Temper.

Fourth Temper.

Fifth Temper.

The process repeated again and again.

Each breakthrough strengthened my muscles, blood, bones, and organs even further.

Time slowly passed.

Almost an hour later—

I opened my eyes.

A powerful aura briefly leaked from my body.

My fists clenched automatically.

The floor beneath me cracked slightly.

Body Tempering Realm.

Ninth Temper Peak.

I had reached the limit of the realm in less than one hour.

If any noble, knight academy instructor, saw this scene, they would probably go insane from envy.

Even wealthy nobles spent days reaching this level.

And that was while consuming expensive resources filled with impurities.

Meanwhile—

I had simply drank a few potions.

"System products are truly cheating."

I laughed.

Then immediately frowned.

A horrible smell assaulted my nose.

"Ugh..."

I looked down.

Black sticky impurities completely covered my body.

The amount was several times greater than before.

"I need a bath."

Without hesitation, I took out one of the Aqua Spring Crystals.

Fresh water continuously flowed from it.

I quickly washed myself thoroughly.

After cleaning up, I glanced toward the clothes I had been wearing.

They were ruined.

Completely soaked with black impurities.

I threw them away.

Then walked toward a cabinet to grab new clothes.

CRACK.

The cabinet door instantly broke off.

"..."

"..."

I stared at the broken door.

The broken door stared back.

Only then did I remember.

"Oh right."

"I just became much stronger."

I sighed helplessly.

After carefully putting on new clothes, I gave the destroyed cabinet one final pitying look before leaving the room.

Outside, I found a maid.

"Please clean my room."

The maid nodded.

I had only taken a few steps when—

"Eww!"

A horrified voice came from behind.

"What happened in this room?!"

I immediately increased my walking speed.

Definitely not suspicious.

Not at all.

Soon, I exited the mansion.

Fresh morning air greeted me.

The sky was bright blue.

The sun had fully risen.

A cool breeze swept across Blackstone Highlands.

I took a deep breath.

"Finally."

"Fresh air."

The mansion stood atop a small hill overlooking the territory.

From here, I could see parts of the civilian district in the distance.

Smoke rose from chimneys.

Merchants moved through the streets.

Workers carried supplies.

Yet despite the activity, the territory still looked poor.

Many buildings showed signs of age.

Several roofs were damaged.

The roads were rough and uneven.

People worked with tired expressions.

It was clear life here wasn’t easy.

I placed my hands behind my back.

"So today..."

"I’m going to inspect my wife’s territory."

As I walked toward the main gate, I asked the system a question.

"System."

"How do people normally break through to Iron Knight Realm?"

The system answered immediately.

[Luke, reaching Iron Knight Realm requires a knight to reach the peak of their body’s limits.]

[That is why this realm is called Body Tempering.]

[The practitioner continuously tempers their blood, muscles, bones, and organs until they reach perfection.]

I nodded.

That matched what I had experienced.

The system continued.

[After reaching the Ninth Temper, they begin gathering mana.]

[The mana must circulate repeatedly throughout the body.]

[Head → Heart → Limbs → Dantian.]

[Again and again.]

[Day after day.]

[Month after month.]

The system’s tone became slightly more serious.

[Eventually, a tiny black-silver particle forms inside the dantian.]

[That particle is the first trace of Aether.]

[The moment it forms, it releases a powerful surge of energy that further purifies the body.]

[That is when a knight officially enters Iron Knight Realm.]

I nodded thoughtfully.

"So basically..."

"If I get a breakthrough resource from the system..."

"I can skip all the boring parts."

[Correct.]

A smile appeared on my face.

I liked that answer.

Eventually, I arrived at the massive main gate of the lord district.

But the moment I looked ahead—

I froze.

"What the hell?"

Rows upon rows of armored soldiers stood outside.

Hundreds of them.

The sight immediately caught my attention.

I remembered what Aurielle had told me.

The territory possessed roughly:

1,000 Body Tempering soldiers.

100 Iron Knights.

5 Bronze Knights.

And only 1 Silver Knight.

Most of their elite forces were stationed near the border to defend against monsters and bandits.

Yet what I saw now didn’t match that information.

Around five hundred soldiers stood before me.

None of them wore the Blackstone Highlands insignia.

Their armor was different.

Their banners were different.

Their discipline was different.

At the front stood several powerful figures.

Three Bronze Knights.

Alongside them—

Vice Captain.

The man was laughing and talking with them as though they already belonged here.

My expression darkened.

Something felt wrong.

Very wrong.

I stopped a nearby soldier.

The man immediately straightened.

"Sir?"

I pointed toward the formation.

"Why are there so many soldiers without our territory’s insignia?"

The soldier looked surprised.

Then quickly answered.

"Those troops were sent by Lord Roland Ashenford’s family."

"They arrived recently to assist with territorial protection."

My heart sank.

"What?"

The soldier nodded.

"Vice Captain Roland personally welcomed them."

I dismissed him and looked back toward the gathering.

Five hundred outside soldiers.

Three Bronze Knights.

A territory whose defenses were already stretched thin.

And yesterday—

A debt-collecting noble had arrived.

My eyes narrowed.

There was no way this was a coincidence.

Somebody was planning something.

And judging by Roland’s smug smile—

He was involved.

A bad feeling settled in my chest.

"No..."

I muttered while staring at the soldiers.

"Something is definitely about to happen."

[Chapter End]