Interactions among the girls

The incident unfolded suddenly. Overwhelmed by embarrassment, Yisha lost her usual restraint over her powers, unleashing their full force.

It was only because Yina managed to cross her arms in time that she safely caught the stool.

“Sister, must you be like this?”

A dull ache throbbed in the web of Yina’s hand. It wasn’t an unfamiliar sensation, yet this was the first time it stemmed from her sister’s embarrassment.

“Baka! Hold your towel tight!” Yisha shrieked.

Yina glanced down, only to see an expanse of pristine white.

“Honestly, it’s just a little exposure, isn’t it?” Yina said indifferently.

Yet, having already been swayed by the alluring hint of someone’s underwear, to see the actual person standing before her, half-exposed and barely concealed, ignited a temptation that soared through the roof.

“I… I’m done washing. You can have the bath now.”

Yisha quickly wrapped herself in the towel she had placed by the tub, intending to flee. Alas, the other girl had come specifically for a shared bath; how could she possibly let Yisha escape?

“Sister, there’s no need to be shy now. Come here~ Yina wants to properly ‘exchange feelings’ with you~”

Yina reached out to grab her. In a bare-handed struggle, however, Yina was generally no match for Yisha.

Yet, with Yisha needing one hand to secure her slipping towel out of embarrassment, she was forced to defend with only one arm against Yina’s two. Even so, the power gap between them was not so extreme that Yina could easily win a two-on-one fight against a focused Yisha.

So, naturally, the girl was forced into a corner. Trapped, Yisha didn’t even dare to open her eyes.

Relying on her ‘domain’ and incredibly fast reactions, she barely managed to maintain her defenses.

“Um, Yina, don’t do this, or I’ll unleash my ultimate move!”

Realizing the situation was spiraling out of control, Yisha, feigning ferocity while inwardly terrified, tried to mimic an angry expression to make Yina back down.

“Don’t worry~ It’ll just be a moment, very quick~ and very comfortable~”

Yina seemed to have made up her mind; today, she would pull off Yisha’s towel and catch a glimpse of her body.

Yes, Yina craved her sister’s body. Such honesty was commendable. Therefore, the prize…

“Don’t you dare come any closer!!!”

Yisha launched a final, desperate lunge. Yet, an impulsive act born of a momentary brainwave, without careful thought, was little different from courting death itself.

Stepping back with her left foot, Yina lowered her center of gravity. Her left hand gently wrapped around Yisha’s shoulder, steadily neutralizing the force of the impact.

Her right hand pressed down on Yisha’s arm to prevent being pushed away.

“Hmph!”

Yisha scoffed. What did it matter if it wasn’t carefully thought out? In this situation, it was all about reaction speed.

After so many sparring sessions, she was absolutely certain that Yina’s reflexes were far inferior to her own.

The hand Yina had pinned now coiled around Yina’s, while the power in Yisha’s shoulder first pulled back, evading the peak of Yina’s strength, then unleashed a powerful rebound!

If Yina failed to react, Yisha would successfully ram her aside and escape the bathroom. Even if Yina did react, Yisha could still use her coiled hand to pull Yina off balance, creating an opening for the impact!

‘Come on, I absolutely won’t…’

Yet, even the greatest plans could falter midway, and on a narrow path, victory belonged to the brave. Her plan was flawless, yet her opponent refused to play by the rules.

Yisha’s shoulder charge met no resistance, sailing straight through. Just as its powerful momentum waned, she crashed directly into Yina’s surprisingly ample embrace.

In that instant, Yisha remembered: Yina had always been better at judging distances.

Splash!

Both of them tumbled into the bathtub, sending a cascade of water splashing all the way to the ceiling.

Gasp!

Yisha surfaced, turning to pull Yina out, only for Yina to grab her and, with a powerful tug, pull her back underwater.

Submerged, Yisha was momentarily disoriented. Though she had managed a quick breath before going under, if Yina insisted on this game, Yisha might truly not get out.

Regaining her senses, Yisha suddenly felt a warmth on her lips. From the sensation, it seemed she had touched something soft and yielding.

!

She quickly opened her eyes, only for her subsequent thought to make her want to find a quiet corner and compose herself.

‘It was just her face. Anyone thinking otherwise should go stand in the corner.’

Yina pressed against Yisha, the water enveloping them both, isolating them from the world’s clamor. In their private stillness, they could distinctly feel the softness, warmth, and beating heart of the other’s body.

Emerging from the water, Yisha said nothing, simply turning and leaving. Notably, an unusual flush stained her cheeks.

Strangely, Yina wore an expression of utter satisfaction, making no further mischievous moves, content to remain in the bath.

Ten minutes later, Yina emerged from the bathroom as well, diligently drying her hair with a hairdryer. Her face glowed with the characteristic flush of a freshly bathed person.

“Sister, you just…”

Before Yina could finish, Yisha pressed a finger against her lips.

“Don’t let there be a next time. Understood?”

Yina looked at the lingering redness on Yisha’s ears, then playfully stuck out her tongue, signaling her compliance.

“Come in and sleep.”

Yisha lifted the blanket, and once Yina had settled in, she switched off the light.

In the darkness, rustling sounds came from all directions. Yisha distinctly sensed Yina’s restlessness and immediately seized the mischievous hand attempting to stir up trouble, issuing a threat.

“Stop fooling around.”

“Sister, hug me~”

Yina whined playfully. Unable to resist her, Yisha reluctantly resigned herself to being a human-sized pillow.

Feeling the overly prominent presence on Yina’s chest, Yisha began to reflect on the origins of this whole situation.

Then she remembered: it was all because she spent her days and nights staying up late for research. One evening, Yina had discovered her, and ever since, a request for a shared bed had been added to their routine once a week.

The night before last, Yina had caught her researching late again. The next day, things had started late, and they had even agreed to go shopping in six days when Mr. Uesugi recovered.

Emmm, Yisha genuinely disliked shopping. She couldn’t fathom its purpose: wandering from one store to another, browsing, only to end up buying a pile of things she might never even use. What was the point?

Moreover, logically, Yisha should have more stamina than Yina. Yet, every time they returned home, Yisha would be utterly exhausted, as if she’d fought a great battle, while Yina seemed refreshed, as if she’d just woken up.

‘How peculiar~’

Yisha mused silently, then wrapped her arm around Yina. After all, if she was going to be a human pillow, there was no rule against hugging back!

The night deepened. The two girls quietly embraced, drifting off to sleep.

Yisha rarely dreamed, but tonight she did.

In her dream, she was in a deep mountain forest. An old man pointed at a girl in a clearing, and the girl corrected her mistakes according to his guidance.

Meanwhile, another girl watched her coldly from inside a house.

“You don’t want to learn, yet you act like this. You’re just a puppet.”

With that, she tossed aside the fruit pit she had finished eating and quietly departed, unnoticed.