I'm in Morioh, just joined a chat group for cute girls.

But the pain in that voice was like a needle, piercing her heart.

Not right.

Rin's brows furrowed tightly. That wasn't just a sound of pure joy; there was pain in it...

Sakura is in pain.

This realization struck her like a bolt of lightning, instantly shattering all her hesitation and retreat.

The awkwardness between sisters and the difficulty of speaking up all became insignificant at this moment.

She had to go in! She had to find out what Sakura was going through!

Rin didn't hesitate any longer and raised her hand to knock hard on the door.

"Boom! Boom! Boom!"

The sounds in the room suddenly stopped.

Immediately following was a flurry of activity and chaotic sounds of rummaging through drawers and cabinets.

After a while, the door was opened a crack with a "click".

Sakura's face appeared behind the door. Her hair was a little messy, her cheeks were flushed, and her eyes were unfocused. She didn't dare to look Rin in the eye.

"Sister, sister? Is something the matter?"

Her voice trembled almost imperceptibly.

"Can I come in?"

Rin said in an unquestionable tone.

Sakura hesitated for a moment, but finally opened the door completely.

The room was filled with a strange smell, tinged with a slightly fishy odor.

Although the bed looked hastily made and the bed was tidy, Rin's gaze still accurately caught the drawer on the bedside table that wasn't fully closed.

A strange purple hue flashed past through the gap in the drawer. It was a streamlined shape, with a transparent substance clinging to its surface.

Rin's face flushed bright red instantly. She quickly looked away, forcing herself not to think about what it was.

Calm down, Rin Tohsaka! Now is not the time to think about these things!

She took Sakura's hand and found that her palm was icy cold and damp with sweat.

"Sakura, let's talk."

Rin didn't give Sakura any chance to refuse and pulled her to sit on the edge of the bed.

However, the moment Rin's buttocks touched the sheets, a cool, wet sensation immediately seeped into her loungewear skirt.

She froze, looked down at the spot where she had been sitting—

Sakura's face turned deathly pale instantly, then flushed a deep liver color.

She sprang up from the bedside like a cat whose tail had been stepped on.

"Yes, I'm sorry! Sister! I didn't mean to!"

She apologized incoherently, frantically trying to cover the mark with the blanket.

"……It doesn't matter."

Rin's expression was also somewhat unnatural. She stood up and felt her skirt sticking to her skin, which was very uncomfortable.

"Um... let's... let's talk in the living room."

Sakura lowered her head, her voice barely audible, like a mosquito's hum.

Rin nodded and was the first to leave the room that made her feel extremely uncomfortable.

The two sat on the sofa in the living room, some distance apart, the atmosphere even more awkward than before.

Rin took a deep breath and decided to stop beating around the bush.

"cherry,"

She looked directly into her sister's eyes, trying to make her tone sound calm and caring, "Were you... just... riding the bumper cars alone?"

Sakura's body trembled violently. She bit her lower lip tightly, said nothing, and simply buried her head even lower.

"Don't be nervous!"

Rin was afraid that she would run away again, so she quickly softened her tone, "I'm not blaming you. You're a big girl now, doing this kind of thing... is a normal physiological need, there's nothing shameful about it."

Hearing Rin say that, Sakura's tense shoulders relaxed a little. She remained silent for a long time before finally nodding with difficulty.

"Of course I'm not saying you're against doing this kind of thing."

Rin carefully chose her words before continuing, "But... Sakura, aren't you... doing this a little too often? I heard you sound like you were in pain just now. If it were just a normal seeking of pleasure, it shouldn't be like that. Is something wrong with your body?"

"No, no..."

Sakura tried to explain in a low voice, but her voice lacked confidence. "I'm sorry, sister... I'll be more careful next time..."

She looked up, a faint blush creeping onto her face.

Her eyes seemed to be misty, and her gaze towards Rin became strange, no longer showing the previous evasiveness and fear, but instead... carrying a hint of hunger?

Was it just my imagination? A hint of doubt flashed through Rin's mind.

She was completely unaware that, as she moved closer, the pure and immense magical aura belonging to a top magician was being released from her without reservation.

This aura had no effect on ordinary people, but for Matou Sakura, who was in a state of mana thirst, it was like an oasis for a traveler in the desert, an irresistible and fatal temptation.

"Sakura, you really have to listen to me, about your body..."

Rin wanted to continue lecturing, trying to guide her to tell the truth.

But Sakura was completely deaf to what was being said.

In her ears, Rin's voice became blurred and distant, and all reason was consumed by a frantic desire surging from her limbs.

The older sister before her exuded a pure magical aura, becoming the only target in her eyes.

Magic... I want it so much... I want more magic...

This thought instantly occupied her entire mind.

"cherry?"

Rin noticed that something was wrong with her and instinctively tried to distance herself.

But it's too late.

A wild glint flashed in Matou Sakura's eyes. She suddenly pounced on the sofa and, with a strength completely at odds with her delicate appearance, slammed the unsuspecting Tohsaka Rin against the soft sofa back.

"Well!"

Rin only had time to let out a short gasp.

This was not a gentle kiss.

Sakura frantically and greedily sucked and seized her pure and sweet magic.

A torrent of magical energy was violently drawn from Rin Tohsaka's body and poured continuously into Sakura Matou's body.

Rin felt her magic circuits were groaning under the strain, her consciousness began to blur, and everything in front of her seemed to be seen through a layer of frosted glass.

Her strength was rapidly fading; she didn't even have the strength to push the person off her.

Just when Rin thought she was about to be completely drained, the crazy suction suddenly stopped.

The delicate body pressing down on her trembled violently, then sprang away as if electrocuted.

"I...what did I do..."

Sakura Matou knelt on the carpet in front of the sofa, covering her face with her hands, her eyes filled with terror and despair.

What an outrageous thing she did to her own sister.

"Sister...I'm sorry...I'm so sorry!"

Sakura's body trembled violently, tears streaming down her face. She slammed her head heavily against the floor, making a dull thud. "Please forgive me! Please punish me! I..."

"……stand up."

A weak but still undeniably authoritative voice came from the sofa.

Rin, supporting herself with her limp arms, swayed as she sat up.

Her face was as pale as paper, her lips had lost all color, and her forehead was covered with a fine layer of cold sweat.

She looked at her younger sister kneeling on the ground, almost crying herself to death, reached out and helped her up from the cold floor.

"I do not blame you."

Rin's voice was a little hoarse. She looked into Sakura's eyes, which were filled with tears and fear, and said, word by word, "That wasn't you just now, was it?"

That look in her eyes, that madness, was definitely not Sakura's own will.

She was being controlled by something. Rin was absolutely certain of it.

Sakura's body was still trembling uncontrollably as her older sister helped her sit back on the sofa.

She didn't dare look into Rin's eyes, but kept her head down, clutching the hem of her clothes tightly with both hands.

"Sakura, tell me, what exactly happened?"

Rin's voice was weak, but unusually firm, "What exactly is wrong with your body? Don't hide it from me anymore."

Her sister's gentleness and forgiveness completely shattered the last line of defense in Sakura's heart.

Unable to bear that heavy secret alone any longer, she told the whole story, haltingly and intermittently.

From the day the Markworm was implanted, to the eleven years of hellish transformation day after day.

Although Gu Ye had helped her remove all the Crest Worms from her body after the Holy Grail War, her body, which had been completely altered, could never be the same again.

"My body... is like a leaky bottle."

Sakura's voice was so soft it sounded like it might shatter at any moment, "Those insects... turned my body into the perfect 'container' for magic, but they also made me dependent on it. Once the magic in my body is depleted to a certain extent, I... I lose control of myself..."

She looked up at Rin, her eyes brimming with tears: "I need... I need to constantly replenish my magic power, just like a person needs to breathe. Otherwise... it will be like what happened just now..."

"When we weren't at the Clock Tower, things were a bit better with Brother Gu Ye around. But after we came to the Clock Tower..."

Sakura's voice trailed off, "The workload here is heavy. Whether it's making costumes or practicing magic, it all requires a lot of magic power. My daily intake... is simply not enough to meet that demand."

Chapter 113 New Group Members.

"So, you just...you solved it yourself using that method?"

Rin remembered the purple object, and her heart felt as if it were being tightly gripped by an invisible hand.

"Hmm... Stimulation... can make the body generate some weak magic power to slightly alleviate the symptoms."

Sakura quietly admitted, "I... I've been trying to learn some meditation techniques to improve magic conversion efficiency, but... it's not working..."

Why didn't you tell me sooner!

Rin finally couldn't help but growl out, but there was no anger in her voice, only endless regret and self-blame.

She pulled Sakura's frail body into her arms and hugged her tightly. "You idiot! Why didn't you tell me! I'm your older sister!"

She thought that by bringing Sakura to her side, she could give her a normal life and keep her away from everything in Fuyuki City.

Little did he know that he had personally pushed his sister into another abyss.

The abundant magical environment of the Clock Tower and the heavy academic workload exacerbated Sakura's symptoms.

It was her arrogance and her negligence that left Sakura to bear all of this alone.

"Don't worry, Sakura."

Rin released her embrace, placing her hands on Sakura's shoulders, her eyes filled with an unprecedented determination. "Leave this to me. I will never let you suffer alone again! From now on, I will take care of it..."

Before Rin could finish speaking, she suddenly noticed that Sakura's eyes were starting to look strange again.

My eyes lost focus again, becoming misty and foggy, and my breathing became rapid.

She looked at Rin's lips and subconsciously licked the corner of her own mouth.

Oh no! Alarm bells rang in Rin's mind.