Cohabitation (Common Sense Alteration)
“Is this really your place, Oppa…?”
Jieun gazed up at the imposing building before her with wide, admiring eyes.
A spacious Western-style mansion, large enough to rival an entire villa, stretched out beyond the gate. Yet what struck her most was the sheer, impossible sense of space. The main house stood far in the distance, past a heavy, towering gate. That meant everything between here and there was nothing but garden.
At this scale, it might even be bigger than the high school she used to attend.
“You really are rich…”
Jieun felt the reality sink in all over again. She had seen plenty of signs that her senior was wealthy, but none of them had ever felt this visceral. This, however, hammered the fact straight into her skull: the owner of this estate was extraordinarily rich.
“Ugh… Suddenly it feels so overwhelming…”
Her heart raced even as a wave of nervousness washed over her. Starting today, she would be living here. With her senior. As his lover.
On the way back from their vacation, he had made the suggestion. “How about we live together at my place from now on?”
Jieun had been ready to refuse out of sheer pressure, but Jia and her parents had immediately pushed her to accept. Jia’s reaction was one thing, but her parents’ enthusiasm had been unexpected. They had sided with her senior, especially her mother, insisting that since Jieun was an adult now she ought to learn how to live on her own, and that a handsome, wealthy boyfriend would surely take good care of her. Yet the look in their eyes had been strangely cold and unfamiliar, leaving her uneasy.
In the end, Jieun had agreed. Her parents had given their blessing, and the thought of staying with her senior had been appealing. So today she had packed her things into a suitcase and come to stand in front of his mansion. His chauffeur—a woman she recognized from their earlier dates—had even picked her up.
Jieun approached the gate and pressed the intercom. A woman’s face wearing a white cat-ear headband appeared on the panel above.
“Who is it?”
The woman’s tone was stiff, almost cold.
“Um… My name is Lee Jieun. I’m Cha Kang-hyuk’s… girlfriend.”
Jieun answered hesitantly. She had only spoken the truth, yet the words felt strangely embarrassing, as if she still wasn’t used to saying them.
“…I’ll open the gate.”
Moments later the heavy iron doors swung wide.
“Whoa…”
The view beyond was even more magnificent than she had imagined. Lush trees and flowers grew across an open lawn that felt like a perfectly maintained park, with neatly paved paths winding through it all.
Jieun stepped inside.
In that instant—
“Hngh…?!”
A chilling shiver raced down her spine. Her head throbbed and an unpleasant sensation crawled over her scalp, as though something were licking every fold of her brain, prying its way inside.
“Ugh… Ahh…!”
Nausea surged. Jieun stumbled backward, face pale and drenched in cold sweat, staring at the space ahead. Danger. She didn’t know why, but every instinct screamed at her to stay out. And her instincts were right.
This place was the villain’s lair. Men like Cha Kang-hyuk—special existences—grew far stronger within their own territory. The same applied to the reach of their abilities. Jieun felt threatened because countless suggestions had already been layered upon her. Stepping into Kang-hyuk’s domain while under those suggestions meant their effects would double in strength. It was like willingly throwing herself into a pit from which there was no escape.
While she hesitated, someone appeared from within.
“Jieun!”
It was her senior. He waved and beckoned her forward.
“It’s all right. You can come in.”
“Oppa… Something about this place feels… wrong.”
“It’s fine.”
After a moment’s indecision, Jieun stepped through the gate.
“Nngh?!”
The moment she crossed the threshold, a lightning-like headache exploded inside her skull. She staggered, nearly collapsing, but Kang-hyuk rushed forward and caught her.
“Are you okay, Jieun?”
“Haa… Oppa…♥”
The moment his scent reached her, her body reacted violently. Her pussy flooded instantly, soaking her panties, while her nipples stiffened beneath her clothes. Heat flushed across her face and her breathing grew ragged.
“Looks like it’s working nicely. Shall we go inside?”
“Yes… Oppa♥”
Jieun clung to him as they walked toward the mansion. Along the way she caught glimpses of a large pond teeming with fish, beautifully tended flower beds, and an elegant terrace, yet none of it registered. Her mind was filled with a single, desperate thought.
‘I want Oppa to fuck me right now…♥’
After roughly ten minutes of walking, they reached the main house. Up close, it looked even more imposing than it had from afar. The moment they stepped inside, several women in maid uniforms greeted them.
“Welcome home, Master. Lady Jieun.”
Every single one of them was stunning, with voluptuous figures—large breasts, prominent hips, tattoos and piercings decorating their bodies. Their outfits consisted of cat-ear headbands, corsets, tiny black micro-skirts, garter belts, and fishnet stockings. It was clearly a maid concept, yet the sheer lewdness of it made Jieun’s chest tighten. Their nipples were visibly erect, and juices trickled down their thighs. Each of them had thick dildos stuffed into both her pussy and back-pussy, plugged in place so they wouldn’t fall out. They looked like the most diligent, obedient maids imaginable.
“These are my employees,” Kang-hyuk explained. “A place this big is hard to manage alone. Jieun here is my girlfriend, as I mentioned earlier. Treat her well.”
“Understood, Master.”
The maids answered in perfect unison.
“Let’s head to the room.”
“Yes, Oppa…♥”
Jieun remained nestled in his arms as they climbed to the second floor. On the landing they encountered a woman.

She had blonde twin-tails and was covered in piercings and dangling condom wrappers. Despite her cute, adorable appearance, her outfit was obscenely revealing.
“Is this the new cock-sleeve you mentioned, Oppa?” the woman asked, glaring at Jieun with open hostility. “She’s pretty enough, I suppose. Not as pretty as me, of course. And what’s with that shameless outfit? Covering up both her tits and pussy like that.”
“Huh?”
Jieun blinked, confused.
“Now that you mention it, Jieun, why are you still wearing clothes?” Kang-hyuk asked, tilting his head.
“What…? What do you mean…?”
A sudden jolt ran through her mind. Come to think of it… why was she wearing clothes? The maids and the lewd woman in front of her all boldly exposed their most intimate parts. So why was she the only one…?
“Ah! I’m sorry, Oppa! I forgot!”
Realizing how out of place she looked, Jieun hurriedly stripped. Only after she was completely naked did she finally feel at ease.
“Hmph. Dating a woman who doesn’t even know basic etiquette… I almost feel sorry for you, Oppa.”
“Don’t be so hard on her, Violet. Everyone makes mistakes. You used to be the same way, remember?”
“That was…! That was back when I was foolish and ignorant!”
The woman called Violet blushed furiously with shame.
“Violet…?”
The name stirred a sense of déjà vu. After studying the woman’s eyes, voice, and strangely familiar aura, Jieun finally remembered.
“Don’t tell me… Dark Night Violet?!”
Dark Night Violet—the powerful Awakener who had once been famous in this area.
“Hmm… How do you know that name?” Violet asked suspiciously.
“It is you! Don’t you recognize me? It’s me! We fought the Dark Byurut-byurut Dan together!”
“What is this, some new ‘it’s me’ scam?”
“No! I’m Justice Red!”
“Justice Red…? That’s impossible. That guy had red hair, was handsome, and—oh, right. He was a guy to begin with.”
“Well… There were circumstances…”
“What, you two know each other?” Kang-hyuk cut in.
“Yes… We used to work together.”
“Oh? Really? With my little sister? That’s unexpected. I had no idea.”
“Little sister…? Are you two actually family?”
Now that she thought about it, Violet had come from an extremely wealthy background. Her parents had supposedly been executives at a foreign company. That would explain why Kang-hyuk was rich too, but… had Violet ever mentioned having an older brother?
“Yeah, but we’re not blood-related. She’s my adoptive little sister.”
“What? So your parents… remarried?”
“Not quite. I was adopted.”
“You were?!”
Jieun stared in shock.
“Why are you so surprised? Having someone as outstanding as Oppa join our family was a blessing. That’s why my parents happily agreed to transfer all their assets and shares to him. Oppa is truly the savior of our household. Without him, our family would have wasted money on pointless donations and public causes. Thanks to Oppa taking everything, the money is finally being used for something truly meaningful.”
“And in return, you promised to serve by my side for the rest of your life, didn’t you, Violet?”
“Yes. For the rest of my life, right beside Oppa♥”
Violet answered with a shy, blushing smile.
Whoa…
Knowing what Violet had once been like, Jieun could only feel bewildered. The cold woman she remembered would never have worn such a human expression. There was a reason she had been called “Dark Night”—a righteous yet blunt and endlessly cold woman, a blade that mercilessly cut down evil. That was the origin of her title.
Moreover—
“Your hair… Did you dye it?”
“Yes. To match Oppa’s preferences. What about yours?”
“Ah, yeah.”
It had been forced, but thinking about it now, the color suited her. Her senior probably understood women far better than she did. So there was no point blaming him. If anything, maybe she had been wrong to blame him back then.
“Hmph. Well, it’s not bad. But it lacks boldness. Walking into this mansion fully dressed is proof of that. Oppa prefers women who openly and vulgarly display their desires. In that regard, you’re a complete failure.”
“A failure…?”
“She’s not wrong, Violet. But you’re starting to overstep. Only I get to judge my girlfriend.”
Kang-hyuk’s expression turned icy for a split second. Violet’s face went deathly pale.
“…I’m sorry, Oppa! I was out of line. Please forgive me.”
She trembled like a child being scolded by her parents, begging desperately. The pitiful, servile sight was so far removed from the memory of the woman once called the Ghost of the Night that Jieun could only stare in stunned silence.
“It’s fine. And apologizing like that in front of my girlfriend just makes me look like the bad guy. Just shut up and stay out of the way~”
“Yes. I’ll be quiet, Oppa…”
Violet forced a fawning smile. The sight was almost heartbreaking.
That… was the Ghost of the Night?
What on earth had happened to her?