A Sister’s Affection and a Feline Transformation

“Princess, would you like to go back and rest?” Faein asked.

“I… I’m fine, really.” Physically, I felt alright, but the emotional blow was far greater. At a time like this, wallowing at home alone would only make things worse.

“Alright, then I’ll go back with you.”

“Um… Big Sister, I have a request.”

“Go on?”

“From now on, when we’re alone, could you… call me Little Sister?”

“Eh?” For a moment, Faein’s eyes flickered, as if she were wrestling with some internal struggle. Calling me ‘Little Sister’ to humor me was one thing, but adopting it as a formal address seemed to hold a special significance for her.

Yet, when Faein realized the disappointment in my gaze, her eyes softened with a maternal tenderness. “Of course, you can.”

“Really?”

“Of course! You are my dear little sister, after all.” Faein smiled, turning to walk away.

Perhaps she didn’t want to hurt my feelings at such a moment; I had, after all, heard rumors of her overflowing maternal affection. Even so, I felt content.

“Big Sister!” Suddenly, I cast aside my pride as a boy and chased after her, clinging to her arm. I pressed my chest against her arm, simply walking beside her in the dim tunnel, like a true girl with her lover, without a single thought in my head.

“Then, from now on, when we’re alone, can I stop calling you Senior and just call you Big Sister?” I asked shyly.

“Mhm,” Big Sister Faein replied, smiling gently and nodding.

“Big Sister! Big Sister!”

Walking hand-in-hand with Big Sister through the cold, gloomy dungeon, perhaps I wouldn’t be afraid anymore.

“Big Sister, I have a question. I’m not sure if I should ask.”

“Oh? What is Little Sister’s question?”

She actually called me Little Sister. It felt so wonderful.

“Big Sister… what if… what if you get your period while adventuring in the dungeon? Won’t it be very difficult? After all, aren’t we told not to engage in strenuous activity then?” I asked.

“Indeed, for female adventurers, it’s a challenging issue that must be faced. However, my body is very healthy, so the reaction isn’t too severe. Still, I try to avoid going into the dungeon during that time. If it’s truly unavoidable, there are some Light and Dark magic spells that can adjust the cycle,” Faein explained.

“Oh, I see. It seems girls who want to adventure long-term really do have a lot to learn.”

“Yes, but a period isn’t necessarily always a weakness. It’s true that Light power significantly weakens during this time, but Dark power abnormally strengthens. Girls actually have two cycles each month when their Dark power becomes especially potent. One is during their period, and the other…”

“What’s the other one?” I blinked, looking at Faein.

Faein lowered her head, a blush creeping across her face. She seemed to be thinking of something that made her shy and short of breath.

“Big Sister, when is the other cycle?”

“Oh, you! Stop asking so many questions! You’re still young, I can’t tell you!” Faein playfully scolded, gently tapping my head.

I cheekily stuck out my tongue. What was that about? Even Faein got shy. What kind of thing could make such a mature Senior so embarrassed?

“Big Sister, didn’t you say you’d guide Little Sister? Little Sister also uses Dark power, so why can’t you tell me?”

Faein’s face grew even redder, her chest rising and falling with hurried breaths. “It’s not that Big Sister won’t tell you, but you’re still too young. It’s better not to know. Well, fine, I’ll give you a hint. It’s… a three-word period.”

“Three words?” I focused on Faein, but she turned her head away, unwilling to let me see her breathless expression. Seriously, how was that any different from no hint at all?

There were countless three-word things in the world. Even with my exceptional intelligence, how could I possibly guess?

“Right!” Faein suddenly remembered something. She pushed me against the wall, looked left and right to confirm no one was around, and said, “Take off your clothes!”

“Eh??? Big Sister, this is a corridor! Even if you called me Little Sister, you can’t be so impatient, can you? Could it be… Big Sister, you enjoy the thrill of potentially being exposed at any moment?”

“What nonsense are you spouting?!” Faein shook her head. “Do you know that during your period, your legs and lower abdomen are the most vulnerable to cold? Look at you, dressed so revealingly, so… flashy! It’ll be trouble if cold air gets in!”

“Flashy? Big Sister, I didn’t choose to dress like this!”

“Alright, no more talking.” Faein waved her hand, and a dense dark primordial force condensed into a black mist, enveloping us. This way, if anyone passed by, they wouldn’t see us.

Next, Big Sister began to take off her own pants, muttering to herself.

“Hey! Big Sister, why are you taking yours off too?”

Faein ignored me. In front of me, she took off her tight leggings and handed them to me. “Here, take these.”

“Eh?” I could only accept the leggings, which were imbued with a feminine scent, completely unsure of what she intended to do next.

Then, Faein reached for her waist and removed the stockings she wore over her black shirt. Why did she always like to tuck her shirt into her stockings? Though it did give her a very mature and charming aura.

“Put them on,” Faein said, handing me the stockings, still warm from her body.

“Eh? But, this…”

“No buts, hurry up and put them on. This is your first period, and your body is most vulnerable to cold right now. While I do have new stockings, it’s best to wear ones that carry my body heat directly; they’ll be warmer and better for you.” Faein spoke with a purely concerned, innocent gaze.

However, wearing Faein’s warm stockings, imbued with her scent, and using her feminine products, I couldn’t help but let my imagination wander.

“Good, wear this as an outer layer,” Faein said, pulling out a black Gothic Lolita dress and a short skirt.

“Eh? Senior, why do you have clothes like this?”

While the stockings were incredibly elastic and could fit both me and Faein, the Gothic Lolita dress was not. Faein absolutely couldn’t wear this dress; it seemed tailor-made for my figure.

For a moment, I saw a fleeting, thoughtful expression on Faein’s face. I seemed to understand. Although I couldn’t guess the period when her Dark power was strongest, I immediately thought of the origin of this dress. But since Faein didn’t elaborate, I didn’t pry further. In any case, Big Sister was doing this for my own good, so I would simply put it on.

It was a cute Gothic Lolita dress, a lovely checkered pattern of red and black with white lace. So, this was Big Sister’s preference, I thought.

Next, Big Sister pulled out a pair of large black—cat ears?

“Put, put them on—” Big Sister held the cat ears out to me, then turned her head away, her face flushed, and pouted. “

“Big Sister, wearing a shirt, skirt, and stockings is for warmth, but what’s the purpose of wearing these? Is this also related to my period?” I asked, confused.

“No, no, it’s, it’s a set,” Faein stammered, her face red.

“Eh? But…”

“No buts! These cat ears are part of your dress! So, don’t ask so many questions, just put them on!”

I noncommittally put on the cat ears, adjusted them, and asked, “Senior, is this right?”

To my surprise, Faein’s face grew even redder. Her eyes sparkled as she looked at me, revealing an innocent side I had never seen before, her expression brimming with happiness: “Mmm—exactly! Adorable! You’re truly adorable!”

“Eh? Really? What about like this?” I thought I was channeling Princess Coolie’s memories as I struck a pose like a little cat girl, though it was still a bit awkward.

I felt Faein’s breathing quicken, and her eyes shone brightly.

“Meow~!” I tried placing both hands in front of me and let out a meow.

“Ah-ha~~~!” Faein seemed to have received a massive shock. She trembled, leaning against the wall, her prominent chest visibly heaving up and down. “No, no, I can’t take it anymore, it’s just—too cute.”

“Eh? Is it?” I continued to blink my big eyes at Faein.

Faein suddenly hugged me tightly, seemingly wanting to kiss me, but she held back. She whispered in my ear, “I will definitely win the competition and gain the right to train you. You are mine.”

“Senior… it’s ‘education rights,’ why are you too…” I said with a wry smile, our smooth faces pressed against each other.

****

After all the commotion, it was time to compose ourselves, lest someone come looking for me. Faein and I gradually calmed down, naturally walking hand-in-hand.

Feeling a little unsatisfied, I once again linked my arm with hers. Leaning against her like a real couple, we walked towards the arena. I truly wished this corridor could be longer.

As we neared the exit, we instinctively separated. In that instant, I blushed even more than when we were together, for it made me realize the nature of our actions.

And it seemed I felt Faein also… in that moment of parting, held a trace of reluctance.

When would we be able to walk like this, leaning on each other, in public? As a princess, to be openly affectionate with my female guardian knight… was that truly allowed? I didn’t know.

“Your Royal Highness! What, what were you doing? Why did you only just appear? The match just now was so exciting, that goblin…” Loynin bounced over to me when she saw me, but then froze at my attire. “Why is Your Royal Highness also wearing cat ears?”

“Is that something you should be asking? Now go back to your commentary, you idiot!” I said, my face sinking.

“Eh? Pr-Princess…” Loynin became agitated at being scolded.

“Idiot! Go quickly!”

“Yes, yes! Master!”

Loynin energetically went back to her commentary, her choice of words still pushing the boundaries of my tolerance. I decided to ignore her.

I returned to my seat.

Suriya observed my outfit, scrutinizing it for a long time. Finally, she stood up, put on her gold-rimmed glasses, and studied me thoughtfully. “Hmm, yes…”

“Suriya, what’s wrong? Is there anything strange about me?” I tried to reclaim some of my princessly dignity, otherwise, I would truly become their plaything.

“Hmm… Your Royal Highness. Suriya has a serious suggestion.”

“Oh? Go on?”

“Personally, I believe, Your Royal Highness, you would be more suited to a bunny girl outfit.”

“Huh???” Suriya, you seriously just gave such a meaningless suggestion?!

“Black stockings, a leotard, with a small fluffy white tail attached at the back, and then, cute floppy bunny ears. It would definitely suit you better than a cat girl outfit,” Suriya said, adjusting her glasses.

“Eh? Is that so?” Bunny ears, cat girl—I didn’t really care.

“Hmph!” To my surprise, Faein slammed her hand on the chair beside her and stood up. She solemnly declared to Suriya, “A bunny girl outfit? Such a vulgar, fawning costume could never suit the Princess!”

“Ha? What did you say? In my opinion, a bunny girl is most suitable for the Princess! A cat girl outfit is childish; it only knows how to act cute and isn’t sexy at all. How can it showcase the Princess’s charm?”

“What did you say? How is a cat girl childish?”

“And where is a bunny girl vulgar?”

“Cat girl!”

“Bunny girl!”

The two tall, sexy beauties stood facing each other, hands on their hips, then both turned to look at me.

Was this… was I supposed to make a decision?

“Um… let’s just watch the match!”