Turning My Junior Sister into a Mary Sue In Xianxia Yuri World

Behind the new residence assigned to Pei Lengxue on Xiri Peak, there was a rather large open-air hot spring. Decorated with artificial rock formations and flanked by two crane sculptures spouting hot water into the pool, it exuded an air of serenity.

Four cultivators clad in gold-and-white sect robes entered through the crescent-shaped gate of the bathhouse, passed a screen, and approached the edge of the hot spring.

Golden-haired Yun Xi stopped at the poolside, her hair cascading down her back. She glanced back at the two female Shadowmoon Sword Sect disciples in the Core Formation stage who had followed her and Pei Lengxue inside, a faintly resentful look on her face.

Due to recent events at Qiong Peak, curfews had been imposed on both Xiri Peak and Yishui Peak. Elders had specifically assigned disciples from the central peak, all in the Core Formation stage, to guard Yun Xi and her companions.

However, Yun Xi was far from accustomed to being watched while bathing. Normally, she would even shoo away her maids when she bathed alone.

After staring at the two for a long while, and seeing they still hadn’t picked up on her expression, Yun Xi sighed softly, raising her hand to point at the bathhouse door. “You two, out!!”

The two disciples exchanged a glance, slightly exasperated. After a moment of hesitation, one of them stepped forward, clasping her hands in respect as she replied:

“Young Mistress Yun, the elders assigned us to stay by your side at all times to ensure your safety. While we respected your wishes earlier in the day, we must insist on staying close now that it’s nighttime. If something like what happened a few days ago were to happen again, we wouldn’t be able to explain ourselves to the elders…”

“Stop, stop!” Yun Xi interrupted, raising her hand. “Everyone knows the elders sent Core Formation stage disciples to guard me. Do you think there’s any cultivator bold enough to come here and try to kidnap me? Relax, nothing’s going to happen.”

“But—”

“Besides!” Yun Xi grabbed Pei Lengxue by the shoulders and pulled her in front of herself as if to present her. “Isn’t Lengxue here with me? Last time, my two sisters were taken, not me. Even if your ‘bad omen’ comes true, Lengxue can protect me, right?”

The two disciples still hesitated, their unease evident.

“But what if—”

“Ugh, I’m not asking you to leave the peak; just stay outside the courtyard. If anything happens, you can rush in immediately.”

Seeing Yun Xi’s firm stance, the two disciples deliberated briefly. Considering that other senior brothers were patrolling the mountain’s perimeter, they gave in. Bowing respectfully, they retreated out the crescent-shaped gate.

Once they were gone, Yun Xi let out a breath of relief. She walked to the poolside and untied her sash with one hand, dipping a toe in to test the water temperature.

Finding it suitable, she removed her robe, stepped back a few paces, then ran forward, diving gracefully into the hot spring with a splash.

Splash—

Her entry into the water was almost perfect, with minimal splashing, thanks to her unimpeded chest area.

Swimming underwater to the center of the pool, Yun Xi touched the bottom with her toes before surfacing and letting out a loud breath:

“Whoo—!”

Her golden hair, now wet and clinging to her face, gave her a much softer appearance, devoid of her usual fiery demeanor. Tossing her hair to shake off the water, she brushed her bangs and side locks away from her cheeks. Turning to see Pei Lengxue still standing on the edge of the pool, she waved energetically.

“Lengxue, don’t just stand there! Come in; it’s so comfortable!”

“Ah… alright.”

Pei Lengxue responded softly, walking nervously to the edge of the pool and slowly reaching for her sash.

Rustle—

With a faint sound, the gold-and-white celestial robe slipped from her shoulders, revealing her snow-white body. Under the moonlight, her skin took on a jade-like luster, resembling a porcelain doll.

It was Pei Lengxue’s first time bathing with Yun Xi, as well as her first time in an open-air hot spring, leaving her feeling inexplicably nervous. She also felt it was a bit extravagant.

Back at the Hundred Lotus Sect and the Profound Star Sect, unless she sweated heavily, she would simply use a cloth to wipe herself clean. Moreover, while other cultivators used water stones to summon water, she still boiled water the mundane way, with buckets and firewood. Seeing this massive pool requiring at least a hundred water stones to fill, she couldn’t help but feel wasteful.

Pei Lengxue dipped her toes in to test the water temperature, then sat by the edge of the pool, one leg draped over the side. Gathering her thick, dark brown hair into a bun, she prepared to enter the water.

Just as she was about to step in, she glanced up to find Yun Xi staring intently at her. Slightly pursing her lips, she asked curiously:

“What’s wrong?”

“Hmm…” Yun Xi furrowed her brow and rested her chin in her hand, thinking for a moment before slowly walking over. “I always knew, but Lengxue, you really are small.”

“Small?”

“Yeah.” Yun Xi sat beside her, leaning against the edge of the pool, her shoulders submerged in the water. She chuckled, “A little girl without all her feathers grown in yet is just that—a little girl.”

“Mm?”

Pei Lengxue remained puzzled. She glanced down at herself, then shifted her gaze to Yun Xi, noticing the lush patch of “grass” beneath the water on her side. It was only then that she realized what Yun Xi’s words meant.

Sliding into the water, she furrowed her brows and asked:

“Does growing hair mean you’re mature?”

“Of course~” Yun Xi replied smugly, teasing, “Only little girls are all smooth and spotless.”

“… …”

Pei Lengxue frowned, seemingly convinced by Yun Xi’s statement. After glancing down at herself again, she asked:

“But I’ve already come of age. Why hasn’t it grown yet?”

What?

“…”

Yun Xi, initially joking and secretly envying Pei Lengxue’s appearance, was caught off guard. Seeing Pei Lengxue’s serious expression and deeply furrowed brows, she quickly explained:

“Ah, Lengxue, I was just joking! Don’t take it seriously!”

“Hm?”

“It’s just… it depends on your body constitution. Everyone’s different, and it has nothing to do with maturity. I only said that because I’m jealous of you.”

“Jealous?”

“Yeah. You’re so fair and delicate, even more youthful-looking than Jiujiu.”

“… …”

Pei Lengxue vaguely remembered Yun Jiujiu was over sixty, unsure if Yun Xi was complimenting her or not. Saying nothing, she simply nodded and mimicked Yun Xi, crouching down to lean her back against the edge of the pool. Closing her eyes, she relaxed.

Yun Xi glanced at Pei Lengxue’s face and unexpectedly recalled the moment Pei had saved her from the jaws of a fourth-tier demonic beast.

Back then, Pei Lengxue’s blade had struck decisively, without a trace of hesitation, instantly reducing the beast to chunks of flesh.

And just days ago, when dealing with the intruders on Xiri Peak, Pei Lengxue was equally ruthless. No matter how they pleaded for their lives, she would respond with a swift decapitation, often stabbing their bodies a few more times for good measure.

Yun Xi had always thought of Pei Lengxue as a cold and unfeeling person.

But just now…

Pausing, Yun Xi softly asked:

“Lengxue, you don’t actually not know where people come from, do you?”

Pei Lengxue tilted her head in confusion.

“What do you mean, where they come from?”

“I mean… how you were born.”

“… My mother gave birth to me.”

“And how did she give birth to you?”

“How…” Pei Lengxue frowned slightly. “My parents shared a bed, and then my mother became pregnant with me. Isn’t that right?”

Yun Xi blinked at Pei Lengxue’s innocent, guileless expression and asked, “Do you know any more details than that?”

“More details…” Pei Lengxue pondered for a moment, lowering her head. “What details?”

Yun Xi sighed lightly, shaking her head.

“Let big sister explain…”

Just as Yun Xi began, Pei Lengxue’s expression suddenly shifted. Her brows furrowed as she quickly turned to scan the night sky.

High above, the full moon hung like a giant jade disk. At its center, a small black dot appeared, growing larger by the second.

Pei Lengxue squinted, trying to discern what it was.

“Hm?”

Yun Xi, oblivious, continued,

“So, for a woman to conceive a child—”

Before Yun Xi could finish, Pei Lengxue sensed imminent danger. She immediately summoned her spiritual energy, forming a protective barrier in front of herself. At the same time, she shouted:

“Yun Xi, protect yourself!”

Yun Xi blinked blankly, tilting her head in confusion.

” —Huh?!”

The next moment—

Boom!

A figure crashed into the hot spring like a meteorite, sending water surging several meters into the air.

The force displaced the pool water, and waves pounded against Pei Lengxue’s spiritual barrier with loud thuds.

Frowning, Pei Lengxue quickly summoned her storage bag from the poolside, retrieving her spiritual sword and slashing vertically.

Swish—

Icy blue energy surged along the blade, parting the water and cutting through the mist to reveal the figure’s true form.

When Pei Lengxue saw the person’s eyes, her own widened in shock. She murmured:
“Senior… Senior Brother?”

“… …”

The man, wearing a mask, had a flushed face and furrowed brows, clearly in pain. Blood trickled from a deep gash on his shoulder, making him look even worse.

“Young Mistress Yun, what happened?!”

The two Core Formation stage cultivators, stationed outside the bathhouse, rushed in upon hearing the commotion.

Upon seeing Ye Anping standing in the center of the pool, the two Core Formation cultivators didn’t hesitate. They immediately summoned their spiritual swords, channeling spiritual energy as they charged toward him.

Ye Anping glanced at the two approaching cultivators. In an instant, he flashed to Pei Lengxue’s side, wrapping his left arm around her neck and pulling out a dagger to press against her throat.

The two cultivators halted immediately.

One of them raised her sword and warned:

“Thief! You—”

Before she could finish, Ye Anping narrowed his eyes and suddenly flung his sleeve.

Several spirit-infused firestones flew out, scattering into the surrounding bathwater.

Boom!

The fiery spiritual energy exploded upon contact with the water, causing the pool to rapidly boil and evaporate.

In mere moments, the rising steam engulfed the area within hundreds of meters. The thick fog obscured vision and disrupted their spiritual senses, thanks to the intense fire energy.

Ye Anping knew this diversion would only delay the two Core Formation cultivators for three breaths at most. Without wasting time, he sheathed his dagger, lifted his junior sister in a bridal carry, and sprinted in the opposite direction.

Just as they leaped over the courtyard wall, a flash of spiritual light appeared behind them. The dense white fog suddenly compressed, and a sword energy shot toward Ye Anping.

Whoosh—

Pei Lengxue, sensing it early, threw her spiritual sword to intercept the attack, shielding her senior brother as he carried her away. She asked:

“Senior Brother?”

“I’ll explain later…”

Ye Anping cut her off softly, tossing a handful of fire talismans behind him.

Boom! Boom!

Explosions erupted within the fog around the bath, scattering the mist and forcing the two Core Formation cultivators to pause. They had no choice but to defend against the talismans with their spiritual energy, buying Ye Anping and Pei Lengxue precious time.

By the time the flames subsided, the two figures had vanished into the dense forest behind the peak.

“After them!”

One of the cultivators frowned and prepared to give chase, but the other grabbed her shoulder.

“Wait! Leave this to the senior disciples. We need to stay here to protect the Third Young Mistress.”

Hearing this, the first cultivator hesitated for a moment before clenching her teeth.

“Tch…”

“The elders tasked us with ensuring the Third Young Mistress’s safety. If this is a distraction to draw us away, we can’t risk it. With all that commotion, the senior disciples should already be aware. That thief is at most in the mid-Foundation Establishment stage. He won’t get far.”

“… Fine.”

The first cultivator nodded and turned back to check on Yun Xi’s condition.

But as they reached the pool’s edge, they noticed Yun Xi floating face-down in the bubbling water.

Due to the firestones and talismans Ye Anping had thrown earlier, the pool water was now boiling.

The two cultivators froze for a moment before gasping sharply and rushing forward to pull Yun Xi out of the scalding water.

“Third Young Mistress?!”

They flipped Yun Xi over and were greeted with her scalded, reddened face and body. Both held their breaths.

One of them gulped nervously and carefully checked Yun Xi’s breathing and body with their spiritual sense. After confirming she had only fainted, they finally let out a sigh of relief.

“Whew—she’s fine, just unconscious.”

…

—

Rustle, rustle—

Leaves crunched underfoot as Ye Anping clenched his teeth, carrying his junior sister through the forest at high speed. He was certain the commotion had already alerted all the Core Formation cultivators patrolling near Xiri Peak.

He couldn’t use his sword or channel even the slightest trace of spiritual energy. If he did, the nearby cultivators would pinpoint his location instantly and surround him.

Undoubtedly, this was a desperate move—one he resorted to out of necessity.

On his way from Jiuquan Peak to Xiri Peak, Ye Anping had already been intercepted by a Core Formation disciple from the Shadowmoon Sword Sect. With no time to explain, he had to force his way through. The injury on his shoulder was a result of that encounter.

Once he felt he had reached the depths of the pine forest, Ye Anping hurriedly retrieved a jade pendant he had borrowed from Sima Xuanji. This pendant, a high-grade magical tool, not only concealed his cultivation level but also masked his presence—more than enough to fool Core Formation cultivators.

He grasped the pendant in his hand, walked to a pine tree, and gently set his junior sister down.

As soon as Pei Lengxue touched the ground, she instinctively leaned forward, shyly using her hands to cover her chest. Her senior brother had carried her out without giving her time to dress. But she didn’t blame him; seeing his urgency, she knew there must be a pressing matter. Without hesitation, she was about to ask for a piece of clothing or a blanket to cover herself.

“Senior Brother, do you have—”

Before she could finish her sentence, Ye Anping cupped her face with his right hand, leaned in, and captured her lips with his own.

Pei Lengxue’s eyes widened in surprise. She staggered back a few steps but couldn’t maintain her balance, falling onto the leaf-strewn forest floor with a soft thud.

However, as she felt the scorching spiritual energy from Ye Anping’s lips, she immediately understood what was happening. Calming herself, she voluntarily began to release the spiritual energy from her dantian.

The rustling wind and whispering leaves surrounded them. Pei Lengxue could sense that her senior brother’s condition was far more severe than ever before. She quickly placed her hands on his back, gently supporting him.

The forest breeze continued to blow, and birds chirped tirelessly. The bright full moon in the sky seemed to peek through the swaying leaves, casting its light upon the two of them.

Streams of boiling, fiery spiritual energy flowed from Ye Anping into Pei Lengxue through their connected lips, while cool, refreshing spiritual energy coursed back into him.

Ye Anping’s frenzied heartbeat gradually steadied. The unbearable weight on his mind began to lift, and his previously heavy, iron-like head felt lighter.

Supporting himself with one hand beside his junior sister’s ear, Ye Anping slowly parted their lips.

What met his gaze was Pei Lengxue’s tearful, trembling eyes. A single tear slid down her cheek, falling onto the soil below.

Pei Lengxue’s lips quivered slightly as though she were gasping for breath. Despite her rapid breathing, her tears gave way to a soft, hoarse smile as she looked at her senior brother’s improving complexion.

“Senior Brother, are you feeling better now?”

“…”

Her words pierced Ye Anping’s heart like a sharp sword, leaving him at a loss. Furrowing his brow in discomfort, he finally noticed her bare body, lying on the prickly leaf-covered ground.

He quickly helped her sit up, leaning her against his chest. Removing his outer robe, he draped it over her shoulders.

“Are you uncomfortable?”

“…”

Pei Lengxue, clutching his chest with her hands, instinctively pressed her legs together. Her feet curled slightly, her toes digging unconsciously into the ground. She didn’t answer, only nodding lightly, her long hair brushing against Ye Anping’s collarbone and stirring his skin.

Seeing her nod, Ye Anping formed a sword sign with his fingers and gently pressed it against the back of her neck. Closing his eyes, he sent his spiritual sense into her meridians to investigate.

By logic, after dispersing his yang energy with her pure water spiritual energy, there shouldn’t have been any side effects.

Yin and yang give birth to all things. When balanced, they produce the purest form of heavenly energy. This was also why her Singular Water Spirit Root made her so sought after.

But this time, things were different.

Now in the mid-Foundation Establishment stage, Ye Anping’s meridians had expanded tenfold compared to when he was in the early stage. In other words, the amount of yang energy Pei Lengxue had dispersed this time was also ten times greater.

Ye Anping tried to remain calm, focusing as he carefully examined her meridians and the flow of spiritual energy in her dantian. His frown deepened.

“This is…”

Retracting his spiritual sense, he glanced at her faintly trembling feet and then at her dazed, tear-streaked eyes.

Warm breaths brushed against his ear.

“Senior Brother, I feel so uncomfortable…”

“… Mm.” Ye Anping acknowledged softly. He placed his hands on her back and pulled her into a tight embrace. “Is this better now?”

With her face buried against his chest, Pei Lengxue slowly closed her eyes and nodded lightly.

“Yes, it feels better… If you hold me tighter, the discomfort goes away.”

“…”

Ye Anping nodded slightly. His nose brushed against the damp nape of her neck, catching a faint fragrance. She always carried a light scent of gardenias, but tonight, it seemed much stronger.

Inhaling the scent, Ye Anping felt a warmth stir in his chest. It wasn’t the fiery, agonizing heat of his previous yang energy outbursts, but a gentle current that flowed downward through his body.

He closed his eyes, slowed his breathing, and held her tightly. After a long pause, he seemed to reach a decision. Opening his eyes, he spoke:

“Junior Sister, I’m going to teach you something. But first, I need to ask you a question. Think carefully before you answer.”

“… Mm.”

Her soft, breathy reply drifted into the air.

Ye Anping hesitated briefly before continuing:

“Lengxue, are you willing to marry me?”

Hearing the change in how he addressed her, Pei Lengxue’s dazed eyes widened slightly. Tears welled up again, hanging on the edge of her lashes before falling.

“I’m willing.”

“Mm…”

Ye Anping let out a sigh of relief. Looking up at the partially hidden moon above, he reached for his waistband, untying it and laying his outer shirt over the ground.

“Senior Brother?”

Pei Lengxue didn’t understand why he was undressing, but the sight of his bare figure somehow eased the discomfort in her body.

Gently, Ye Anping laid her on his clothes, wrapping an arm around her waist and leaning close to her ear.

“I’m going to teach you something. Close your eyes and feel it, alright?”

“… Mm.”

The soft rustling of leaves filled the winter forest as the cold wind swept past, lifting the fallen foliage and brushing against their exposed skin. Yet neither of them felt the chill.

A mixture of warmth and tingling sensations surged through their meridians, echoing in their minds. Pei Lengxue’s soft murmurs harmonized with the rhythm of their connection.

The brook flows gently, but over rocks, it rushes like a stream.

Bamboo grows slowly, but under nourishing rain, it becomes lush overnight.

Yin and yang intertwine, opening and closing like the cycles of nature—an eternal dance repeated countless times since the dawn of the world. When had this sacred process become shrouded in mystery?

If the heavens were devoid of emotion, all things would cease to exist. Without creation, there would be cycles without return, causes without effects.

Ye Anping gazed at Pei Lengxue’s enchanting yet dazed expression. Closing his eyes, he cast aside all thought. Embracing one of the people he cared for most in this life, he pressed his lips to hers once more…