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

Knock knock—thud—

“Hey! What are you doing? This jade couch has a chipped corner! You lot can expect to be sent to the mountains to mine by Fairy Pei if this keeps up!”

“…Sorry, Senior Brother Zhang… We’ll be more careful…”

In the courtyard, dozens of Shadowmoon Sword Sect disciples at the Qi Refining stage worked under Zhang Yihe’s direction, methodically moving piece after piece of furniture into the house, setting up the new residence.

Under a pavilion in the courtyard, Pei Lengxue, her expression blank, lay sprawled across a stone table. She listlessly twirled an empty teacup with her finger.

Her long, dark brown hair flowed down her back, the golden feathered adornments near her shoulders swaying gently in the breeze. Dressed in elegant silken robes of gold and white, she seemed to shine, radiant in the morning light.

In terms of seniority within the Shadowmoon Sword Sect, Pei Lengxue now outranked even the elders. According to the sect’s hierarchy, her words carried weight second only to Yun Tianchong. However, due to her young age and still-developing cultivation, the elders hadn’t granted her full authority.

Nevertheless, while she lacked actual power, her status was undeniable.

Now, every disciple in the Xiri Peak who saw her would bow and respectfully call her “Martial Aunt Pei.”

This grand mansion, the jade couch being carried into the house, and even an entire spiritual mountain granted for her future sect establishment—all were gifts from the Shadowmoon Sword Sect elders.

It was like a pauper’s daughter suddenly discovering she was actually the heiress of a wealthy family. She was assured she’d never have to worry about food, clothing, or shelter again.

But Pei Lengxue didn’t feel the least bit happy about any of this.

—The feast she’d been handed was missing a key flavor.

She vividly recalled a time when, at the age of five, Senior Brother had taken her to a festival in the Hundred Lotus Sect’s marketplace. There, they had played a lottery-style game. Ye Anping and she each bought a ticket. She won a necklace worth thousands of spirit stones, while Ye Anping walked away empty-handed.

Pei Lengxue still remembered the look of surprise on her senior brother’s face. It was the first time she had ever seen such an expression on him, and the first time she had beaten him at anything.

That victory had kept her elated for days, to the point where she couldn’t sleep. She’d even sold the necklace and smugly treated her senior brother to a day of candied fruit and sweet preserves in the Hundred Lotus Sect marketplace.

Though they both suffered from toothaches for half a month afterward…

But now, faced with this spiritual mountain and grand mansion—a windfall far greater than a thousand-spirit-stone necklace—she could only muster an indifferent, “Oh, I see.”

She knew full well that this feast had been arranged by her senior brother.

But to her, it was as ordinary as a meal: whether she ate or not made no difference.

More than a powerful spiritual sword, more than a mansion or a mountain, she yearned for something else entirely.

—She wanted to help her senior brother!

Yet, Senior Brother always had everything planned out for her. He left her no room to think, no chance to prove herself. She even worried that taking initiative might backfire and cause him trouble.

But she desperately wanted her senior brother to look at her differently.

She wanted his acknowledgment.

She wanted him to know she wasn’t the same little girl who used to know nothing.

—She had grown up! She had come of age! She was independent now!

—She could protect him now!

—Senior Brother! Rely on me!

—Come on, rely on me!

Caught in this spiral of frustration, Pei Lengxue angrily flicked her finger, sending the teacup spinning off the table.

Clink—

The porcelain cup arced through the air, landing in the courtyard.

At that moment, a Shadowmoon Sword Sect disciple carrying a box stepped on it, slipped, and hurled the box into the air. Its contents—kitchen knives—scattered everywhere.

Simultaneously, from the courtyard gate came Yun Xi’s startled shout.

“Ahhh!”

The teacup, after being stepped on, rolled to the gate, where Yun Xi had just stepped over the threshold. Losing her footing, she landed flat on her back with a loud thud.

Used to such incidents, Yun Xi was about to get up when she noticed dozens of knives flying toward her. She quickly sucked in a sharp breath, pulled a massive turtle shell from her storage bag, and raised it as a shield, deflecting the flying blades.

“Phew—” Yun Xi exhaled in relief before immediately drawing another sharp breath. She bellowed:

“Zhang Yihe!!!”

“…Uh?”

…

Pei Lengxue, who had witnessed the entire chain reaction, blinked blankly.

She felt a pang of guilt. Yun Xi and Xiao Yunluo were among the few people she didn’t worry about competing for her senior brother’s affection. Feeling apologetic, she murmured a soft “Sorry,” then pulled out a notebook from her sleeve and hastily jotted down a line:

“Yun Xi stepped into the courtyard, slipped on a teacup, and was almost hit by falling knives. The teacup’s origins remain unknown.”

Having finished writing, Pei Lengxue prepared to offer Yun Xi a handkerchief.

Just then, a sword light descended from the sky, landing at the courtyard gate.

Yun Xi turned to see Yun Yiyi stepping off the flying sword. Her brows furrowed deeply; whenever her elder sister showed up, it was rarely good news.

As Yun Yiyi was about to cross the threshold, Yun Xi darted forward, slamming the courtyard door shut and blocking her path.

With a face full of disdain, Yun Xi looked up at her sister and asked:

“What are you doing here?”

Yun Yiyi furrowed her brows as well, but her tone remained calm:

“…I came to talk to you.”

“If you’ve got something to say, say it here. I’m not in the mood to serve you tea.”

“…This isn’t the place for that. We’re still sisters. Can’t we at least have a conversation, even if there’s no tea?”

Yun Xi rolled her eyes, her tone dripping with irritation:

“Sisters? Funny, coming from someone who schemed to kill me as a child. Bet you didn’t think I’d live this long, huh?”

Yun Yiyi sighed in exasperation, staying silent for a moment before trying to explain:

“I admit I was mean to you back then. But how many times do I have to say it? All those attempts on your life were my mother’s doing. I never laid a finger on you.”

“You weren’t on the same side as your mother?”

Yun Yiyi pursed her lips, paused, and said, “What do you want, then? Should I kneel and apologize to you?”

“Sure, go ahead.”

“…”

The two sisters locked eyes, sparks flying in their intense stare-off. Even Zhang Yihe, standing nearby, felt the tension and instinctively stepped back, too wary to intervene.

From her seat in the pavilion, Pei Lengxue watched with furrowed brows, pondering.

Her brother had given her clear instructions: stay by Yun Xi’s side, protect her, and document her movements.

But Pei Lengxue remembered sneaking a peek at her brother’s messy plans back in Hundred Lotus Sect. Although the writing was chaotic, she gleaned the essence of it—her brother’s ultimate goal was to mend the fractured relationship between Yun Xi, Yun Yiyi, and Yun Jiujiu.

He must have thought she wasn’t capable of handling this particular task, so he hadn’t asked her to try reconciling the sisters.

But…

Pei Lengxue hesitated, biting her lip.

She worried that meddling in tasks outside her brother’s orders might disrupt his carefully laid plans.

Still, if she succeeded in helping him, even just a little, wouldn’t he praise her for being mature?

After a moment of internal conflict, she resolved to act beyond her assigned role.

But how?

How could she bring those two closer together?

Recalling her brother’s usual methods, an idea formed. She promptly drew her Snow Qiong of the Myriad Spirits Sword from her storage bag.

The instant the sword emerged, the entire courtyard was blanketed in an icy chill, its cold aura emanating throughout.

The disciples of Shadowmoon Sword Sect, busy moving furniture, shivered as the frost seemed to seep into their bones. At the gate, both Yun Xi and Yun Yiyi froze, startled by the sudden cold. They instinctively turned toward Pei Lengxue.

The next moment, Pei Lengxue silently strode up to them, planting her sword firmly into the stone floor at the gate.

Swish—

The icy energy surged, and both Yun Xi and Yun Yiyi trembled slightly under its influence, startled by her unexpected intervention.

Pei Lengxue spoke softly but firmly:

“Stop arguing.”

“…”     “…”

Seeing their stunned silence, Pei Lengxue pressed her lips together, adding:

“If you fight again, I’ll… I’ll spank you.”

“?”   “?”

Pei Lengxue frowned, emphasizing, “Spank you until it hurts.”

Both Yun Xi and Yun Yiyi were utterly baffled. Yet Pei Lengxue’s serious expression made them wary enough to drop their quarrel.

Taking the opportunity, Zhang Yihe scurried forward to play peacemaker, rubbing his hands together with a nervous chuckle:

“Young Mistresses, please, let’s have a civil chat. I’ll brew some tea for you, alright?”

Yun Xi and Yun Yiyi turned their glares on Zhang Yihe, snapping in unison:

“Mind your own business!”

He immediately threw his hands up in surrender, shooting a glance at Pei Lengxue as if to say, “Help me out here!”

Reluctantly, Yun Xi gave in. She sighed and waved Yun Yiyi through.

“Fine, you can come in. But only because Pei said so.”

“…Thank you,” Yun Yiyi replied cautiously, casting a wary glance at the frosty sword before stepping inside.

However, as Yun Xi entered, she inadvertently stepped on the same ceramic cup from earlier.

Thump—

She toppled backward, her head colliding squarely with Yun Yiyi’s face. Both fell to the ground in an ungraceful heap.

“Can’t you watch where you’re walking?!” Yun Yiyi snapped, rubbing her nose.

“And who told you to stick so close—ah, my head…” Yun Xi winced in pain.

Before they could start bickering again, there was a sudden crack! crack!

Two sharp strikes echoed in the courtyard as Pei Lengxue, wielding a branch she had picked up, swatted both sisters on the backside.

The hits landed with such precision and speed that the sisters froze, stunned. It wasn’t until a few seconds later that the sting set in. They both jumped, clutching their bruised backsides, and turned to gape at Pei Lengxue in disbelief.

“Pei… Pei Lengxue, you actually hit us?!” Yun Xi exclaimed.

Yun Yiyi, suspecting some form of petty revenge for her competition with Pei Lengxue over her senior brother, bit her lip but didn’t dare say more.

Pei Lengxue calmly reminded them:

“No fighting.”

Faced with the piercing gazes of the Shadowmoon Sword Sect disciples, both Yun Xi and Yun Yiyi begrudgingly agreed, shuffling off toward the inner hall with pained, measured steps.

Zhang Yihe watched in awe before sidling up to Pei Lengxue, giving her an enthusiastic thumbs-up.

“Junior Sister Pei, you’re amazing! From now on, I’m sticking with you!”

“…”