Broken Possessors of Infinite Regression Academy

“Why are you calling her ‘sister’?”

Even though she was asked this, Kang Yuna, who would normally have pounced on Diana for her tone, remained silent. Instead, she cautiously watched my reaction.

‘Was she a little shocked?’

It was understandable, considering Kang Yuna’s background as someone who had lived her entire life on Earth and was an A-rank hunter in the Eternal Guild.

She had been overwhelmed by the sheer scale of the birthday banquet, which had taken over a quarter of the imperial capital of another world that she had only heard about. She had also met people of immense status, although she hadn’t seen much of them.

On top of that, her superiors, the guild leaders of the Eternal Guild, had openly displayed their closeness to me, and Kang Rahe, whom she had called ‘sister’, turned out to be a person of even higher status than the Emperor.

The icing on the cake was that her boss, Nika, had taken me away and returned with a meaningful message. Looking back at all that had happened, it was understandable that Kang Yuna would be overwhelmed.

‘……Those don’t seem like the kind of eyes that would be curious about that.’

However, the reason why Diana was calling her ‘sister’ and being so affectionate seemed to be something else. It didn’t seem like they had simply bonded over the fact that she was my sister, but there was something more to it.

‘Did she tell them?’

The only thing that could have sparked their interest was Kang Yuna revealing that he was from another world. Other than that, there was no explanation for why the two of them were acting so friendly and even using the term ‘Yuna sister’.

Trisha might have done it, but Diana was not the type to be so sociable. She had only become accustomed to hiding her emotions and forcing herself to create them as she lived her life as a merchant.

“Hmm, similar tastes?”

However, Diana’s answer was completely different from what I had expected.

“As we talked, I realized that Yuna also has a very noble and refined taste. It was a coincidence that we discovered it, but after our spiritual exchange, I couldn’t help but acknowledge it.”

“……What’s so noble and refined about it?”

My eyebrows furrowed involuntarily. Diana and Kang Yuna had similar tastes?

One of them had been obsessed with erotic novels since before she was in double digits, filling an entire bookshelf in her room with adult novels. As for the other one, she had once stuck a dildo―

“……”

Suddenly, it made sense. Now that I thought about it, Kang Yuna had also read a lot of erotic novels.

“……It doesn’t seem entirely wrong. Similar tastes are possible.”

As I said this, I stared intently at Kang Yuna. Feeling guilty, her gaze shifted away. On the other hand, Diana was as confident as ever, as if the concept of embarrassment didn’t exist for her.

Trisha, on the other hand, looked like she had given up halfway. It was a relief that at least one of them had normal tastes. Their usual behavior and tastes seemed to be completely opposite.

“That’s right. Tastes should always be noble and refined.”

“Pffft! Cough!”

Suddenly, Elysier, who had been quiet until now, burst out laughing and ended up spitting out the coffee she had been drinking. Brown droplets splattered everywhere, causing Rosalia to scream and move her upper body away.

“I’m so, so sorry…… Cough, cough! I’m sorry.”

Elysier hurriedly pulled out a tissue and began wiping the nearby table and chairs. The parts she missed were taken care of by Diana’s magic. The white tablecloth, which had been stained with brown spots, was instantly cleaned.

“What’s wrong, Ciel? Is there a problem?”

“Cough, no, there isn’t……”

From her reaction, it seemed that Elysier knew the true nature of the ‘noble taste’ that Diana was talking about. Despite knowing this, she was acting so boldly in front of someone who knew the truth. Diana truly had a thick skin.

“So, to run a merchant guild, you have to be this shameless, huh? I’ve gained a new respect for you, Diana.”

“Shameless? I don’t know what you’re talking about.”

“Oh, so you’re showing me instead of telling me? You should have just said so earlier.”

Despite her frail appearance, which made her seem like a tragic heroine lying in bed with tuberculosis and coughing, Diana had a thick skin that was almost like iron.

Shaking my head, I sat down between Rosalia and Elysier. Rosalia patted the seat next to her as if she had been saving it for me.

“So, Saintess?”

“Yes, Mira Crate.”

Although her tone was a little less formal than when she was acting as a saintess at the academy, it was still more formal than her usual tone with me.

“What happened?”

“I don’t know. It’s not our business, is it? All I know is that the three of them have become quite close.”

“Cough……”

Elysier, who was covering her mouth, was shaking with suppressed laughter. The image of Saintess Rosalia was quite different from that of the possessed Yu Chaewon.

Rosalia pouted for a moment before reaching behind me and poking Elysier’s side. However, since there was a fundamental difference in their strength, it probably didn’t hurt much.

“So, what else did you talk about?”

I deliberately looked at Kang Yuna as I asked this. Kang Yuna flinched noticeably and made a sour face as she answered.

“Just… life stories and stuff…”

“Is that all? Your face looks like you’re about to cry. Didn’t you talk about the noble tastes that Diana mentioned?”

“……”

She glared at me. However, she didn’t seem completely defeated. Otherwise, I would have felt bad for bringing her here.

“Let’s talk privately for a bit, Yuna.”

I intentionally emphasized the word ‘sister’. Kang Yuna nodded cautiously. The glare she had given me earlier was nowhere to be seen.

Rosalia and Elysier, who knew that she was my biological sister, didn’t react at all. They were too busy bickering under the table.

I walked a little further into the backyard to avoid the curious gazes of Diana, who seemed eager to eavesdrop.

“Your people skills are amazing, sister.”

And as soon as we turned the corner, I couldn’t help but laugh.

“Not only the Sword Saint, but now you’re also close with my sisters from this world? I didn’t know you were such an amazing person. I see you in a new light, Kang Yuna.”

“Hey, that’s what I wanted to ask you! What the hell did you do here? How did the birthday party turn out like this?!”

“I told you before I came. I said that this would be the first real birthday party, so they prepared a lot of things, and not to be surprised. I won’t have such a grand celebration from next year onwards.”

“It’s not just a matter of scale, you crazy bastard! You need to speak properly!”

Kang Yuna grabbed my collar and shook me. Even in her agitated state, she didn’t put much strength into her grip.

“By the way, were all the guild leaders from this world? Is that why they’re so strong?”

“No, they’re mixed. Four are from Earth, and three are from this world. You can try to guess which is which, but you have to do it alone. You know you can’t let it slip―”

“I won’t! I swear!”

As if she couldn’t believe what she had just heard, Kang Yuna shouted in shock.

“Now, I have a question for you. What happened between the three of you? I really didn’t expect you to become so close.”

“We, we didn’t do much……”

Unlike usual, where she would have growled at me for prying, Kang Yuna was more compliant due to the tension of the past day’s events.

“They were just asking why you called me ‘sister’, and then somehow the topic shifted to our tastes… But it turned out that we had similar tastes.”

“You went from asking about why I called you ‘sister’ to talking about your tastes? That’s quite a leap.”

“I, I’m telling the truth! I don’t have anything else to say! I was so nervous that I can’t even remember what I said!”

Unlike me, who had blatantly lied about what happened with the Succubus Queen, there was a low possibility that Kang Yuna was lying.

Unlike Diana, who ran an independent merchant guild and had experienced all sorts of people, and Trisha, who owned the empire’s largest casino, Kang Yuna was not the type to lie in such a nervous state.

“Alright, alright. I won’t ask any further. I can guess what kind of tastes you have in common. About the dildo stuck on the wall―”

Kang Yuna quickly covered my mouth with her hand, her face filled with shame as she growled.

“Do we really need to talk about this here, Kang Sung-ah…?”

“I’m just saying that you have similar tastes. I’m not trying to tease you, so don’t worry.”

I smiled and removed her hand from my mouth. She turned slightly pale as she easily lost the strength contest. It had always been like this, so it wasn’t surprising.

“Anyway, I already guessed as much. One of the sisters here also has a hobby of reading erotic novels. She started buying them when she was very young, and she got caught by her parents more than once.”

The method of buying erotic novels was also unconventional, befitting the eldest daughter of the Crate family. She simply bought an entire corner of the bookstore that included erotic novels.

She bought several bookshelves worth of books, sorted out the erotic novels, and also kept some of the general-audience novels as a smokescreen. She then donated the rest, claiming that they weren’t interesting.

This went on until she had donated over 15,000 books, and then she got caught. In any case, she had shown her true colors from the beginning.

“Yes. Thank you, you bastard.”

“You’re welcome.”

“Does that sound like a compliment to you?”

“Did it sound like one to you?”

“……”

I laughed as I brushed off her glaring gaze.

Anyway, I had a pretty good idea of what had happened. Out of curiosity, they had gotten along surprisingly well. It was indeed an unexpected situation, but given their similar tastes, it wasn’t entirely unbelievable.

“……Hey. Can I ask you something else?”

“It doesn’t matter. What’s with this atmosphere you’re setting?”

“You…… Did you do it with all the guild leaders…… that thing?”

This was a bit of a direct question.

I paused for a moment, choosing my next words. However, the fact that I was taking time to respond was enough of an answer for Kang Yuna.

“Yes.”

“You won’t deny it.”

I had intended to affirm it outright, but seeing her shocked expression, I softened my response.

“I thought so. It didn’t feel like a normal relationship. If they were just colleagues, they wouldn’t have interfered with another guild like this. Yeah, I thought so.”

Kang Yuna mumbled incoherently for quite some time. I didn’t have much to say in response, as I would have probably reacted the same way if I had a sister who returned from another world with seven men.

If I had a sister and she came back from another world with seven men, I would have probably grabbed her by the collar as well. Purely out of shock, of course.

“Ha, damn…… You’re so damn good at this.”

“Well, it just happened that way.”

Among the possessed, we had healed each other’s past wounds, and Erestika’s maternal instincts had awakened after I helped defeat Mahbat. As for Nika, she was a Succubus Queen who had never experienced the act of sucking life force.

As for Leona, their closeness was part of Aria’s plan, and now that relationship had evolved beyond that.

“……So, since you’re close with the guild leaders, there’s something I want to ask you.”

After rambling for a while, Kang Yuna cautiously brought up the topic.

“You can ask me anything. What are you trying to get at with this atmosphere?”

“I heard something from them. I don’t know the details, but apparently, there was Succubus Pheromone in the drink you had yesterday.”

“Pheromone?”

“They said they put it in carefully so that it wouldn’t leak out. They told me not to use healing magic on you, as you might notice it. I only overheard it, so I’m not sure if it’s true or not……”

It was probably true. The puzzle pieces in my head fell into place.

I hadn’t drunk much, yet I had blacked out. The reason why I had engaged in such acts while blacked out, and why everyone had allowed Nika to take me away during the birthday party, suddenly made sense.

“……Ah.”

So that was why.

“Thank you, sister. I’ve gained valuable information.”

“Please, don’t tell the guild leaders that I told you―”

“I won’t, I won’t. Even if they knew, I wouldn’t let them harm you. So, don’t worry.”

I smiled lightly. Of course, I had no intention of telling them.

However, apart from that, I felt that we needed to have a little talk.