The Sex Slave Contract

Master...? What's a sex slave contract?

"The 10th floor hasn't been officially cleared yet, right? Then go back and clear it on your own. I'll give you gear again."

Under her instructions, I headed back to the 10th floor of Babel Tower.

You can re-enter any floor you've cleared before at any time. Of course, the EXP is minimal.

As soon as I entered the floor, the thick fog parted, and a 2-meter-tall skeletal soldier slowly approached.

Clad in heavy-looking black armor, wielding a massive greatsword. Blue ghostly flames burned in its skull sockets.

The knight commander, betrayed by the king and slain, had become a vengeful specter trapped in Babel Tower.

Even as a skeleton, this once-mighty warrior unleashed his signature techniques, mercilessly slicing players apart.

True to his legend, the hefty greatsword swept in a massive arc.

'But it's slow!'

Without flesh, it might have gained some speed, but its swing was pathetic.

Obviously—swinging a greatsword that fast requires muscles.

I dodged effortlessly, then unleashed a form, striking with sword strikes far quicker than its movements.

'This is the feeling.'

Fighting theoretically doesn't hone the instinct.

But in real combat, I instinctively knew how to handle it. I could see its attacks, predict its moves, and how to parry them.

The knight panicked, flailing wildly, but its sloppy technique was no match.

When the opening appeared, I thrust my blade in effortlessly.

I defeated the knight.

Just 5 minutes.

That's how long it took me to defeat the boss.

No level-up, but I got the rewards.

'Unexpectedly, these are rewards I know.'

I'd looked them up online beforehand.

The Jewel of Ruin curses its bearer with misfortune but skyrockets physical abilities.

The Perfume of the Goddess of Beauty completely cures skin issues and keeps the user flawless forever.

Neither is useful to me. The perfume sells for more, so I picked that.

'This'll pay off some debt.'

The perfume goes for about 10 million won.

Enough to chip at what I owe Master and cover this month's tuition.

'Players really make bank.'

With luck, you can get rich quick. Eight of the top ten richest are players, after all.

'Master doesn't show it, but she's loaded too.'

I want that someday. Get strong enough to follow in her footsteps...

"The day of reaping has finally come."

Hyunwoo returned to the Dojang from Babel, brimming with confidence.

"I'm back."

"Oh, already? I figured it'd take two hours."

"It was easier than I thought."

The difference with a master was stark.

Ryu Ga-eul, starting from scratch, took three months to clear the 10th floor.

But talented Park Hyunwoo conquered it in just one.

'Never expected him to have talent.'

She'd taken him as a disciple for his face and build, not skill.

A lack of talent would've been better—no way to pay debts, so he'd offer his body willingly.

"Got this month's tuition ready?"

Ryu Ga-eul tossed it out casually, like routine business.

Hyunwoo beamed, proudly pulling out the perfume.

"Yes! Selling this item should cover it!"

"Hm? You haven't cashed in items yet?"

This was bad. Really bad. Ryu Ga-eul's heart raced wildly.

"By law, Babel items need a week's appraisal before auction. Can't sell or buy immediately—it's illegal."

Babel items could have unknown dangers.

Government agencies required appraisal and safety tests first.

'Though the perfume appraises in two hours.'

She fibbed a bit. High-demand items like that get quick checks before auction.

"Oh, r-really."

"Hmm... Want me to wait a week? I trust our Hyunwoo won't let me down."

Clueless, Park Hyunwoo despaired. No tuition now...

'Can't be a burden in human skin.'

He didn't want to disappoint the one who'd given him shelter, gear, techniques. Orphaned young, he craved affection and feared losing this bond.

"I-I'll get the money somehow, Master. Just give me an hour!"

"No need, really. I'll wait a week."

"I can't! I'll get it now!"

"But you owe interest too, right? Hmm..."

Perfectly ripening. Ryu Ga-eul licked her lips, feigning concern with a sly smile.

"Fine, can't be helped. How about a way we both enjoy?"

"Both...?"

"Remember our first contract? It said if you can't pay tuition, you pay with your body."

Right, ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠yeah!

Hyunwoo's face lit up. Couldn't pay cash, but equivalent actions would do.

"Sigh, but forcing you feels wrong..."

"I can handle housework great!"

"Housework? Nah. You owe interest separately, plus tuition. Not chump change for chores."

Her tone turned coercive; Hyunwoo shrank back.

"So, paying with your body..."

"One way. Read this and decide."

Hyunwoo's eyes trembled reading the contract title she'd pulled out.

No way—Master doing something this lewd...

"Keep reading. Sign at the bottom when decided."

The content was just as shocking.

"I'm so merciful... Not demanding eternal service, right?"

"Ahh..."

It got worse lower down.

"..."

"Sign."

"Th-this..."

"Not signing? Fine. Pay cash now. Oh, tuition waived, but interest accrues. Hmm... Principal 50 million won at 5% monthly?"

With interest, it was about 52.5 million won.

"Let's skip tuition for now."

Compound interest was terrifying. It'd balloon uncontrollably.

"In ten months, you'll owe about 81 million. Three years: 290 million. Five: 900 million. Skip tuition midway? Whoa, debt explodes!"

Of course, she wouldn't let it. Hyunwoo would fall before then.

"Let's have fun with sis from now on?"

Ryu Ga-eul smirked down at her disciple.

Only then did Park Hyunwoo realize.

He hadn't been taken as a disciple—but as a toy ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠to slake her dark lusts.