Yu Seohee's smiled.
I don't know what she's thinking, but I could already guess.
She probably already planned to exchange her body for my protection.
"Don't let me wait longer..." Yu Seohee said with enchanting smile.
I unbuttoned her blouse and lowered the bra that covered her full breasts, revealing their shapely form.
I began kneading her breasts like dough, pinching and rolling her nipples between my fingers.
Yu Seohee closed her eyes, enjoying the sensation.
I'm surprised by her move, I wonder is this because of the game setting.
Yu Seohee has never dated a man and seems virtuous. She must be a virgin.
Earlier, I had learned about Yu Seohee's family history. Her father had passed away when she was young, and she had grown up under her single mother's care.
The family was poor, so she had to work while attending university. With no money or time, she had never experienced a proper romantic relationship like others her age.
She's a virgin with barely any experience.
I sat up and reached for Yu Seohee's skirt, skillfully removing it.
She was wearing pantyhose with a run in the calf. I peeled those off as well.
Her underwear looked like the cheap kind sold at supermarkets, utterly lacking any allure. But I wasn't disappointed.
What matters now isn't the panties, but what lies beneath.
I pulled off her underwear. The dark bush, flattened by the fabric, sprang up stiffly.
Beneath it was her tightly closed vulva. I grabbed her legs and spread them wide.
I reached for her vagina, then hesitated. I regretted that Yu Seohee's eyes were to passive.
"Yu Seohee, if you really want it than you should also make your move. please me well... I'll make sure you're rewarded."
Yu Seohee opened her eyes, her enchanting gaze meeting mine.
"Really...?"
"Yes. I'll give you food and teach you how to fight monsters. If things get too dangerous, I'll step in myself. The condition is that you must keep me entertained."
"What do I have to do? Suck Mr. Yu's cock?"
"That's one of the things you'll have to do. But for now, just moan in time with my gestures."
I began stroking her vulva from bottom to top with my thumb. Her body flinched at the sudden contact.
"M-Moan? Inha is outside!"
"Just moan quietly. Ah, don't use Silence now."
"Hah... haah..."
Yu Seohee started making awkward moans. I chuckled softly.
Maybe I should help her along.
Activating Sexual Enhancement, I began manipulating her vulva.
I spread her labia minora, pressed firmly on her clitoris hidden beneath its hood, and teased the sensitive skin.
"Ahhh... haah... haaaang!"
The heat rose with Yu Seohee's moans. With Sexual Enhancement amplifying her sensitivity, she couldn't help but feel pleasure.
Squish.
I withdrew my fingers from her vulva. My thumb and index finger were drenched in clear, viscous fluid.
"You got this worked up in this situation?"
"N-no, that's not it! It's just... when Mr. Yu touches me...!"
"It's fine. I like lewd women."
I stripped off my pants and underwear, revealing my rock-hard erection. Earlier, I'd slipped a finger inside her vagina to confirm she was a virgin.
Thud.
I rested my cock against the bush above her vagina. My shaft stretched down to her lower abdomen, just below her navel.
"Huh? T-this is..."
Yu Seohee's eyes widened. Even if she couldn't see it, she could certainly feel it.
That's why I'd deliberately positioned my cock there.
"It's... it's too big! Something like this won't fit inside!"
"Don't worry. It will."
I gripped the base of my cock with one hand and used the other to spread her labia, aiming for her vaginal opening.
"W-what about a condom?"
"Don't worry. I'll give you a contraceptive pill later."
"Ugh..."
I pressed the head of my cock against her vaginal opening, holding it firmly in place.
"Use Silence. How long can you maintain it?"
"I-I already used it. With my current Mana, it should last for ten minutes."
"Is that so? Then we'll have to make this quick and intense."
I activated Sexual Enhancement. Using it on virgins had become a habit.
Partly out of consideration, but mostly because I wanted to enjoy myself fully.
Unlike my real body, this one had limited stamina and couldn't maintain Sexual Enhancement for long probably no more than three minutes.
I just need to fuck Yu Seohee as hard as I can during these three minutes.
I gripped her legs firmly, pushed them apart, and began positioning her into a curved position. Her legs draped over my shoulders, her hips arching upward. She was surprisingly flexible.
Yu Seohee stared at me with enchanting eyes. I met her gaze and grinned.
"The mating press!"
I thrust my full weight into her, driving my cock deep inside.
In one swift motion, I tore through her hymen and reached her cervix. The impact was so forceful it made a soft thud.
"...!"
Yu Seohee's mouth gaped open. The sudden shock had stolen her breath. I waited patiently for her breathing to return.
After a few seconds, she began to breathe properly again.
A frown creased Yu Seohee's brow.
"That expression... I love it. It's so fucking hot."
I began pumping in earnest. Her virgin pussy gripped me tightly.
Thwack, thwack, thwack.
"Haaak! Aaaah!"
The sound was a moan bordering on a scream. But after just a minute, a sweet pleasure began to mix with the moans.
"Hngh...! Hah... Haaah! Aang!"
Perhaps because she was under a silence spell, she didn't hold back her moan at all.
Thwack!
"Such a tight pussy. I'll give you a special treat for breakfast tomorrow."
Yu Seohee's eyes rolled upward. She seemed to have been driven mad by my True Mating Press.
I understood. It must have been too much for a virgin to endure.
I ejaculated deep inside her convulsing vagina.
***
The next morning.
Sung Yujin served each of them a bowl of chicken ginseng soup.
"..."
The breakfast continued in silence.
Yu Inha knew what had happened inside the tent last night. He hadn't heard any sounds, nor had he peeked inside.
He had accidentally discovered the truth by using his unique trait, Mana Sensitivity (B).
He was furious. He wanted to kill Sung Yujin for doing it with his older sister.
But he was even angrier at himself. He had known this would happen.
Logically speaking, the only reason this ruthless killer, who had no qualms about taking lives, had spared them was because of the women.
Despite knowing this, he had pretended not to notice, driven by his desperate desire to survive.
Even now, he was pretending not to know as he ate breakfast. Driven by the primal urge to survive, he mechanically moved his spoon, consuming the chicken stew.
The siblings had been packing up their tent when Yu Inha asked, "Where are you going, Sis?"
"Just running a quick errand. I'll be right back," Yu Seohee replied casually before disappearing into the forest.
Sung Yujin was nowhere in sight.
After a moment's hesitation, Yu Inha activated his Mana Sensitivity. He sensed Sung Yujin and Yu Seohee's presence a short distance away.
His older sister was kneeling on the ground, giving fellatio to Sung Yujin.
"Ugh."
Yu Inha gritted his teeth. A conveniently sized rock lay nearby. If he grabbed it and charged right now...
That bastard has a knife. And he's a Hunter. There's no way I could win.
Yu Inha's body went limp. Feeling utterly helpless, he began tidying up the tent.
"Sorry. I took longer than I thought."
His older sister returned twenty minutes later. Yu Inha forced his gaze away from her damp lips.
"...It's okay. Don't worry about it."
Sung Yujin had taught the siblings combat techniques. While wandering through the forest, they had stumbled upon a knife, which Sung Yujin had given them without hesitation.
That afternoon, using the traps Sung Yujin had taught them, the siblings successfully hunted three Haders.
Day 3 of the tutorial.
Yu Inha noticed a change in his older sister's demeanor. Just yesterday, she had been the epitome of gloom, but now she was even smiling faintly.
Yu Seohee occasionally disappeared with Sung Yujin, only to reappear later with a blush on her cheeks.
Sung Yujin's attitude had become noticeably kinder.
Day 4 of the tutorial.
Yu Inha overheard his sister's voice calling out to Sung Yujin, a strange affection lingering in her tone.
Yu Seohee's demeanor toward Sung Yujin had become remarkably relaxed. They now exchanged casual jokes and even engaged in natural physical contact.
It was a break time.
"Ahhh! I love it so much!"
Yu Inha closed his eyes at the distant moan of pleasure from his sister.
When Yu Seohee returned, a pale, viscous fluid clung to her thigh.
Day 5 of the tutorial.
Hunting Hader wasn't frightening. While Hader possessed exceptional physical abilities, his intelligence was lacking.
By actively utilizing traps, the process was merely time-consuming, not dangerous.
That morning, however, Yu Inha witnessed Yu Seohee, naked, swaying her hips above Sung Yujin, who lay on the bait-covered ground. Yu Inha hid in a tree, observing their actions.
"Mr. Yu, how's this?"
"The previous one was better."
Squeak, squeak, squeak!
"What about this?"
"Not bad."
Yu Inha was speechless at his older sister's expression. Yu Seohee was swaying her hips lasciviously, her face radiating pure bliss.
Is that... really my Older Sister...?
Unable to watch any longer, Yu Inha turned away, putting distance between himself and the pair.
Sung Yujin and Yu Seohee had sex whenever they could. They seemed to care little about Yu Inha's presence anymore.
Yu Inha's once innocent older sister now knew how to wear a seductive expression.
That evening, Yu Inha saw Yu Seohee licking Sung Yujin's anus. Even as she licked that filthy place, she wore an expression of ecstasy, showing no sign of disgust.
That's my sister's true nature, Yu Inha thought, feeling betrayed. He resolved to stop caring about Yu Seohee and Sung Yujin's relationship.
***
Tutorial, Day 6.
Yu Seohee was being changing faster than I'd anticipated. There were likely several reasons for this, but the unique circumstances of our situation were likely a major factor.
A treacherous younger brother. A dangerous monster that must be hunted. And me, wielding overwhelming power.
In the end, I'm Yu Seohee's only hope.
Without me, they would die. Yu Seohee knew this all too well.
Yesterday I hunted High Heider too... All that's left is to clear this.
Occasionally, we encountered other groups. They rarely just passed by.
Usually, they were in groups of around six, and if they were all men, they would inevitably try to take advantage of Yu Seohee, a stunning beauty.
Yu Seohee has been looking quite sexy lately.
She'd unbutton the top of her blouse to reveal her cleavage or hike up her skirt to show off her thighs. She'd become much more liberal with her exposure, all with the obvious intention of seducing me.
I've slaughtered every fool who dared to make a move.
Yu Seohee and Yu Inha remained unfazed even after seeing the corpse. They had grown somewhat accustomed to the situation.
Yu Inha must have figured out our relationship. I wonder what he's thinking.
In the first few days, his eyes had been filled with hostility when she looked at me. But now, that animosity was completely gone. In fact, he seemed to treat me with a certain ease.
He's acting a bit strange too.
As usual, we were moving through the forest, searching for Haders to hunt, when we spotted a group of people gathered at the foot of a cliff. There were over twenty of them.
What's with this crowd? How can they maintain such a large group in the tutorial?
Just as I was marveling at the sight, someone stepped forward from the group.
The King of the Demonic Heavens is watching you.
The Lord of the Celestial Vault is watching you.
The Golden Collector is watching you.