After Mistakenly Marking Her Stunning Omega Stepsister - Chapter 21

As the mid-term exams approached, the entire school fell into a tense atmosphere.

Everyone was studying diligently, not just in class but also burning the midnight oil in their dorms, even skipping weekends at home.

Except… Lin Sui’s dorm.

“I don’t care, you know that,” Zhu Huan said innocently.

Xia Yi chimed in, equally relaxed, “I’m already confident. There’s nothing left to review.”

Lin Sui’s eyebrow twitched as she turned to Ye Shuqian. “What about you?”

“My abilities are what they are. Besides, being too stressed isn’t healthy. I’d rather go out and relax.”

After what happened last time, Ye Shuqian wasn’t as afraid of Lin Sui anymore. With Feng Yue and the others expelled, she had become much more outgoing, no longer the timid girl who couldn’t even speak up.

Lin Sui closed her eyes and took a deep breath. “So, you three really want to play that… what’s it called? Script murder game?”

“It’s a new one, and I heard it’s super fun,” Zhu Huan said excitedly. “You’re really not coming with us?”

“No.”

Lin Sui rejected the offer firmly. “I’d rather sleep. We stayed up too late last night playing.”

“Alright then.”

The group chattered excitedly about the upcoming game as they left the dormitory.

******

It was afternoon, and most students had gone to the library to study, leaving the dormitory building quiet and deserted.

This suited Lin Sui perfectly for catching up on sleep.

She was quite satisfied.

Drowsily, she slept for about twenty minutes before the dormitory door rattled.

Lin Sui woke up, opened her eyes, and her dark pupils showed a hint of confusion.

Probably Zhu Huan and the others coming back for something.

Thinking this, she took a deep breath, suppressed her irritation, and got up to open the door. “I’m trying to sleep. Just grab your stuff and check out later…”

Before she could finish, someone threw themselves at her, and the strong scent of red wine filled her nostrils.

“Sister…”

Lin Sui’s brain froze for a few seconds before she exclaimed in surprise, “What are you doing here?! And what’s with this… what happened to you?!”

As soon as she finished speaking, she realized talking here wasn’t appropriate. She quickly pulled Wen Xiangzhu into the dormitory, checked to make sure no one was watching, and slammed the door shut.

“What’s going on?”

Lin Sui frowned, supporting the limp, unsteady Omega.

“Sister, do you not like me?” Wen Xiangzhu’s cheeks flushed crimson, her eyes glistening with tears, her voice tinged with hurt.

Lin Sui instinctively furrowed her brow, momentarily at a loss for words.

In her moment of hesitation, the person before her suddenly wrapped her arms around Lin Sui’s shoulders, clinging to her like a squirrel and nuzzling her neck.

“What are you doing?”

Lin Sui’s body stiffened, but instead of pushing Wen Xiangzhu away, she placed a hand on the Omega’s waist to steady her.

The girl felt limp as a puddle of water, her body hot to the touch. Lin Sui feared she might collapse if she wasn’t careful.

Just as she was thinking this, Lin Sui heard a soft, syrupy voice by her ear.

“Sister’s pheromones… they smell like fir.”

“So nice.”

Lin Sui’s head exploded with a roar, as if something had detonated inside. The tips of her ears flushed red.

“Wen Xiangzhu!”

She gritted her teeth, her voice dripping with threat.

That comment… she felt like she’d been teased.

But Wen Xiangzhu ignored her, acting as if nothing was wrong, and continued to nuzzle against her shoulder, sniffing.

It seemed she’d been affected by the Omega’s pheromones too.

Lin Sui took a deep breath and suppressed her own pheromones. Seeing that Wen Xiangzhu was genuinely unsteady on her feet, she reluctantly sacrificed her own comfort and helped her onto her bed.

“Rut…” Wen Xiangzhu murmured, her eyes half-closed.

“What?” Lin Sui pressed.

“An Alpha in the neighboring building is in rut. I’ve been influenced by it.”

Lin Sui took a few seconds to process the words, then snapped, “Then you should have stayed away and taken your Inhibitor. Why did you come here?”

“I don’t have any left…” Wen Xiangzhu said slowly, sitting up with a look of distress. “I was scared, so I could only come to you, Sister.”

Seeing this, Lin Sui fell silent for a moment.

Thinking about it, this was Wen Xiangzhu’s first time experiencing her estrus period at school. Being afraid… was understandable.

“Good thing Zhu Huan has Omega-use Blocker Patches and Inhibitors. I’ll go get some for you.”

Lin Sui had previously looked down on Zhu Huan for getting so close to an Omega—so close that she’d even gone to the trouble of buying Blocker Patches and Inhibitors. Now it seemed she was actually going to be a big help.

By now, Wen Xiangzhu was too weak to protest. Her voice was so faint that even she could barely hear it.

Lin Sui quickly found what she was looking for amidst Zhu Huan’s clutter and walked over to the bed.

Wen Xiangzhu’s entire body radiated resistance.

Just then, a knock came from the dormitory door.

Lin Sui froze. Although it was the weekend and most students had gone to the library to study, there were still some, like herself, who had stayed behind to rest in their dorms.

When Wen Xiangzhu first arrived, her pheromones had already been leaking severely. Lin Sui had smelled the scent the moment she opened the door, and now the lingering pheromone scent might still be lingering in the hallway.

To Alphas, this scent was fatally alluring.

Whether out of curiosity or some other motive, they would undoubtedly try to track down the source of the pheromones.

Without hesitation, Lin Sui easily turned Wen Xiangzhu face-down on the bed, exposing her back. She brushed aside the hair at the nape of Wen Xiangzhu’s neck and stuck the Blocker Patch in place.

Wen Xiangzhu let out a soft groan, perhaps from discomfort. “Sister…”

“Don’t move.”

Lin Sui moved swiftly, picking up the syringe and injecting the Inhibitor into Wen Xiangzhu’s arm. This time, her movements were much more practiced than before.

The heat emanating from Wen Xiangzhu’s body began to subside, gradually returning to normal.

A white blanket was draped over her, enveloping her completely.

“Stay put. Don’t move. I’ll go answer the door.”

Wen Xiangzhu pressed her lips together, the flush on her face still lingering as she nodded obediently, stifled beneath the soft blanket.

Outside, two Alphas pressed their ears against the door, whispering.

“Did you hear something?”

“Yeah, I think there’s an Omega hidden in there.”

“Who would dare bring an Omega to the dorm? How brazen…”

Before they could finish speaking, the door suddenly swung open.

Lin Sui opened the door to find two Alphas frozen in awkward positions, their ears pressed against the wood.

Now that the door was open, they froze.

“Miss Lin… Are you alone?”

Lin Sui arched an eyebrow. “Did you need something?”

“No, no.”

“Then… I just happened to be ordering bubble tea. If you want some, I can order for you too!”

“Right, right! Let’s order together!”

Despite their words, their eyes kept darting toward the dorm room, drawn by the thick scent of pheromones wafting from inside.

There was definitely an Omega in there.

Lin Sui’s eyes narrowed slightly as she subtly blocked their line of sight.

“No need. Order for yourselves.”

“Ah, okay.”

Lin Sui didn’t bother with politeness this time and simply closed the door.

She sighed silently, turned, and walked to the bed, looking at the small bundle wrapped in the white quilt.

It was very quiet, looking quite sweet and innocent.

After a moment, Lin Sui spoke.

“Don’t leave until the scent is completely gone.”

Wen Xiangzhu moved slowly, gently lifting the quilt to reveal her head and messy hair. Her eyes were slightly red, looking pitiful.

“Okay.”

Seeing this, Lin Sui was silent for a while. “What… what’s the meaning of this? I didn’t bully you.”

Wen Xiangzhu blinked, her voice choking with tears. “I don’t want to take the Inhibitor. It hurts…”

Lin Sui was stunned. “Did I hurt you just now?”

The Omega on the bed looked aggrieved, as if she had just been bullied. “It hurts. Taking the Inhibitor hurts. I don’t want to take it…”

“Then… then what about your Heat?” Lin Sui was so angry she almost laughed.

As far as she knew, this was the only way to suppress an Omega’s Heat.

Wen Xiangzhu pursed her lips. “I heard that a Temporary Mark doesn’t hurt much and doesn’t have any side effects…”

“Don’t even think about it.” Lin Sui’s expression darkened. “It seems I’ll have to find you a proper tutor to teach you some discipline.”

“Sister…”

“Enough. Do your thing. Once the scent fades, you can leave on your own.” Lin Sui turned away, walked to the window, and opened it to ventilate the room.

As an Alpha, she was susceptible to the influence of Omega pheromones.

Just now… she felt an indescribable sensation, a burning heat, as if she desperately needed something.

Thankfully, it seemed her Rut hadn’t been prematurely triggered.

Thankfully…

Later, Wen Xiangzhu left on her own, still looking a little aggrieved and resentful, but Lin Sui’s icy words had thoroughly deflated her.

Children don’t understand. A cold scolding will make them behave better. She’d learned this cold knowledge from… some game, she couldn’t remember which.

Lin Sui sat at her desk for a long time. She wanted to sleep, but the thought of someone else having just been on her bed…

made her uncomfortable.

After a moment, she sighed and resignedly got up to change the sheets.

Just then, loud noises came from the dormitory door, followed by a knock.

“Suisui, are you… available?”

It was Zhu Huan’s voice.

Lin Sui walked over with a suspicious look and opened the door, looking at Zhu Huan. “You’re alone? You came back so quickly?”

Zhu Huan laughed. “Of course I came back to check on you! Did you hide someone in the dorm while we were away?”

“What are you talking about?”

Lin Sui froze for a moment, then remembered Wen Xiangzhu, who had just left.

Zhu Huan caught that fleeting hesitation and smiled knowingly. “Suisui, you’re being dishonest! How could you keep such a big secret from me? Do you even consider me a good friend?”

“No… where did you hear that I was hiding someone in the dorm?”

Lin Sui smiled helplessly.

“From a post, of course,” Zhu Huan said matter-of-factly. “It said you were hiding an Omega in your dorm, and their pheromones were leaking out into the hallway. There were even sounds of ‘Ow!’ and ‘Stop moving!’ coming from inside.”

Lin Sui: “……”

Zhu Huan, oblivious to Lin Sui’s conflicted expression, continued. “As soon as I saw that, I rushed back! Of course, I’ve already had someone delete the post for you. And I kept it secret from Xia Yi and Ye Shuqian too. You can trust me!”

Her expression was almost smug, as if she’d done Lin Sui a great favor.

Lin Sui wasn’t impressed, even a little annoyed.

The cries of ‘pain’ and ‘don’t move’ were perfectly normal. It wasn’t what people think…

Zhu Huan entered the dormitory, closed the door, and sniffed around. The pheromone scent had mostly dissipated, leaving only a faint trace.

She shook her head knowingly, narrowing her eyes dramatically. “Spill! Who was it? Be honest and you’ll get off easy! No lying!”

Lin Sui sighed. “It was Wen Xiangzhu. She was affected by the Alpha in the neighboring building during his rut and entered heat.”

Zhu Huan frowned, surprised. “Wait… she’s an Omega, right?! Why would she come to you if she’s in heat?!”

“She said she ran out of inhibitors and was scared, so she came over,” Lin Sui shrugged.

“Scared? An Omega in heat coming to an Alpha? You know what that means, right?” Zhu Huan raised an eyebrow, lowering her voice. “That’s blatant seduction!”

“No way!” Lin Sui frowned slightly, unconvinced. “Besides, she sees me as her older sister now. It’s not strange for her to come to me for comfort when she’s scared at school.”

“You’re really…”

Zhu Huan looked at Lin Sui with exasperation, torn for a moment before finally shaking her head and sighing.

“Never mind. I’m too tired to argue with you.”

Lin Sui didn’t press the issue. After changing the sheets on the bed, she collapsed onto it, exhausted.

Finally, she could rest…

Lin Sui lay there for a while, but sleep eluded her. The image of Wen Xiangzhu, flushed and limp in her arms, kept replaying in her mind.

After several touches, she could only think:

An Omega’s body seems softer than an Alpha’s…

She opened her phone and flipped through the chat app. Wen Xiangzhu had sent her a message as soon as she got back to the dorm, letting her know she was safe, but Lin Sui hadn’t seen it until now. Now that she opened it, she found the glaringly obvious name in the contact list strangely irritating. The more she looked at it, the more it grated on her.

Lin Sui stared at it for a while, tapping her fingers against the screen as she changed Wen Xiangzhu’s contact name.

[Idiot]

After changing it, she stared at it for a while.

Isn’t this a little ambiguous? After all, I just saw Zhu Huan label her ambiguous crush as “Idiot” yesterday.

No, no, I need to change it again!

Lin Sui agonized over it for a long time, looking more troubled than when she was solving math problems.

Finally, Wen Xiangzhu’s new nickname was born:

[Tag-along]

This one feels the most fitting.

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