I, Rin Tohsaka, Will Be a Demon God in Type-Moon

"I, Rin Tohsaka, will become a Demon God in the world of Type-Moon" Author: Nuclear Weapon's Brilliance

"Introduction: Child, on the day you were born, your name echoed throughout Fuyuki City: 'Rin Tohsaka.'

Child, I watched you grow day by day with pride, becoming the embodiment of 'Iron Fist.'

You must remember, we have always survived in this world with elegance and 'wisdom.'

I also believe you will use the power of 'dropping the ball' with caution.

But true victory is handing the blame over to me to bear.

One day, my life will reach its end, and you, you will become a Demon God!

Section 1: Chapter 1 - I, Rin Tohsaka, Begin My Path to Becoming a Demon God Today

Fuyuki City, dusk descends.

Tokiomi Tohsaka politely bid farewell to Zouken Matou with his wife and daughter.

After Zouken Matou was out of sight, Rin Tohsaka, standing beside him, couldn't help but ask Tokiomi Tohsaka.

"Dad, are you really going to send Sakura away?"

Tokiomi Tohsaka looked at his elder daughter, whose brow was furrowed, and smiled as he crouched down to pat Rin Tohsaka's head.

"Dad understands that sending Sakura away makes you, Rin, very upset, but this is for Sakura's better future. Dad is proud to have given birth to two excellent daughters like you. However, the Tohsaka family's magecraft can only satisfy one of you, and I've often worried about this. Now, being able to give Sakura to the Matou family, one of the Three Great Families, is a choice made for Sakura's better future. Do you understand, Rin!"

Aoi Tohsaka gently patted Rin Tohsaka's head from behind, interrupting Rin, who was about to argue further with Tokiomi.

"Little Rin, don't argue with Dad, okay? Dad is doing this for your own good."

Seeing that the matter was unavoidable, Rin Tohsaka could only give up and unwillingly returned to her room.

Back in her room, Rin Tohsaka thought about the prompt she had just heard, her eyes firm, her fists clenched, as if she had made some kind of decision.

"System, activate."

"Understood, Myriad Worlds Magic System activated. Activation complete. Welcome, Rin Tohsaka, to the Myriad Worlds Magic System."

Some people might find this strange. That's right, this Rin Tohsaka is not the original one, but someone who transmigrated from Earth.

Rin Tohsaka's past life, her name, she had completely forgotten. Almost forgetting everything, she vaguely remembered being a transmigrator. She thus became the infant Rin Tohsaka. Perhaps due to a lack of familial affection or care in her past life, the meticulous care from the Tohsaka couple during her growth after transmigration allowed Rin Tohsaka to calmly accept her new life. It wasn't until today, when Zouken Matou appeared, that the forgotten memories suddenly resurfaced. With the awakening of these memories, along with the impending tragedies of this family, Rin Tohsaka finally understood the voice that often appeared in her mind. It wasn't some demon, but her transmigator's cheat, her lifeline.

As the system, which had been idle for several years, finally started operating normally, Rin Tohsaka, feeling that she had the ability to break the deadlock, let out a relieved sigh and began to communicate with the system in her mind.

"System, what functions do you have?"

"This system possesses the ability to allow the host to master the magecraft of different worlds across the myriad realms."

"System, the key is, what can I obtain now?"

"Please consult the panel for details."

Following the system's prompt, Rin Tohsaka quickly opened the system panel.

Most of the options on the panel were mysterious question marks. The only available choice was to obtain rewards.

Rin Tohsaka operated the panel to open the reward acquisition. The panel displayed information on three individuals and their magecraft: Stiyl Magnus, Osmund, and Dehaina.

"They are from the world of A Certain Magical Index, The Familiar of Zero, and Dungeons & Dragons, respectively. System, will different choices have any impact on the future?"

"Different choices will affect the world inclination of future rewards, but it can be freely modified later."

"So, I'm choosing a magic system now."

Just as Rin Tohsaka was contemplating how to choose, Aoi Tohsaka's call from downstairs interrupted her thoughts.

"Little Rin, come wash up and eat."

Rin Tohsaka scratched her head irritably and made her decision.

"I'll choose Stiyl. After all, he's the only one I'm more familiar with. Moreover, most of the magic theories in A Certain Magical Index also exist in our magecraft, making them easier to use and less troublesome. Stiyl's King of Witch Hunters is also very useful. It's decided, it's you!"

As Rin Tohsaka made her selection, it felt as if something was forcefully crammed into her brain. A wave of dizziness washed over her as a large amount of magecraft knowledge entered her mind.

"Little Rin, what are you doing? Come eat with Mom. I know you're upset about Sakura being sent away, but the Little Rin I know is an obedient good child."

Hearing Aoi Tohsaka's voice from outside the door, Rin Tohsaka shook her head, alleviating the dizziness, and quickly opened the door.

"Alright, Mom. I was just thinking about something and didn't hear you."

Aoi Tohsaka smiled as she looked at her daughter, gently took Rin Tohsaka's hand, and led her downstairs.

Soon, led by Aoi Tohsaka, Rin Tohsaka washed her hands and arrived at the dining room. Tokiomi Tohsaka sat elegantly at the head of the table, looking at the mother and daughter who entered, and said with a smile.

"Come, Rin. Your mother specially made your favorite dishes today. Hurry and eat while they're hot."

Aoi Tohsaka brought Rin Tohsaka to the dining table and gently pulled out a chair for her. After Rin Tohsaka was seated, she sat down next to Tokiomi Tohsaka.

Sakura, sitting nearby, saw her sister sit down and said softly to Rin Tohsaka.

"Sister, don't worry about me. Dad must be doing this for my own good."

Rin Tohsaka turned her head and stared at Sakura in front of her. Sakura's expression was calm, as if she wasn't the one being sent away. However, her dim eyes betrayed Sakura's true feelings. After all, what child would want to be given away by their father.

Rin Tohsaka turned her head, forcefully slammed her left hand on the table, stood up, and said to Tokiomi Tohsaka.

"Dad, I've decided. Let Sakura inherit the family's magecraft and crest. I want to forge my own path. That way, we won't have to send Sakura away."

Tokiomi Tohsaka, frowning as he watched his eldest daughter suddenly erupt, spoke calmly.

"This is impossible. The path of Magecraft isn't something one can just walk through casually. Besides, Rin, you're still young and don't understand anything. Stop messing around."

"Dad, I haven't even tried yet, how do you know it's impossible? I'm the genius you talk about, I'm a genius, why can't I do it?"

After speaking, Rin Tohsaka raised her right hand and began to chant in a low voice.

"Fire in my hand, its form is a sword, its duty is judgment."

A flame sword radiating scorching light appeared in Rin Tohsaka's hand. Rolling heat waves emanated from it, displaying its extraordinary power.

"How is it, Dad? This is Magecraft I created myself using books from the basement. I can definitely forge my own path of Magecraft."

Tokiomi Tohsaka, seeing the Magecraft used by Rin Tohsaka, found his eyes filled with disbelief. He couldn't imagine that his eldest daughter, who had only been exposed to Magecraft for a few months, could create such powerful Magecraft on her own. This was no longer just genius; it was talent that completely surpassed genius. Indeed, Rin Tohsaka was the treasure bestowed upon him by heaven.

"Rin, you truly are a genius! To create and use such Magecraft after only a few months of studying it, did you create this using Runic script? It's astonishing, Rin!"

Rin Tohsaka dispelled the Magecraft in her hand and looked at Tokiomi Tohsaka expectantly, hoping he would say he wouldn't send Sakura away.

"Dad, can we not send Sakura away?"

Tokiomi Tohsaka's eyes grew serious, his mind racing as he thought. After a moment, he seemed to understand something and spoke.

"Rin, my choice to have you inherit the Tohsaka family was correct. With such talent, you will surely achieve the Tohsaka family's long-held wish."

After praising Rin Tohsaka, Tokiomi looked at Rin's expectant gaze. He could no longer pretend. Seeing Sakura, who also didn't want to be sent away, reflected in her eyes, a smile reappeared on his lips.

"How about this, Rin? One year. If you can demonstrate the ability to protect this family within a year, I won't send Sakura away, and I will also teach Sakura Magecraft. However, don't talk about not inheriting the crest anymore, understand? Alright, everyone sit down and eat."

Rin Tohsaka, although she hadn't fully achieved her goal, was now very confident that with the system activated, she could convince Tokiomi Tohsaka within a year. She happily hugged Sakura.

"Sakura, did you hear that? You won't be sent away."

"Mhm, thank you, sister."

Section 2 Chapter 2: Rin Tohsaka Works Hard to Become a Demon God!

Several days later, in Tokiomi's study.

Zouken Matou sat in a chair, calmly resting his cane, and said to Tokiomi Tohsaka by the window.

"Tokiomi, you should know that it's the best choice for Sakura to be adopted into our Matou family."

Tokiomi Tohsaka, looking through the window at his children playing happily in the courtyard, replied without hesitation.

"Yes, Old Man Matou, you are correct. However, I also need to consider the opinion of the future head of the Tohsaka family. Therefore, I hope, Old Man Matou, that you can accept my decision to be made a year from now regarding Sakura's adoption into the Matou family."

Zouken Matou slowly stood up.

"Very well, then in a year. I look forward to Tokiomi making the right choice. I shall take my leave now."

Tokiomi Tohsaka turned around gracefully.

"Thank you, Old Man Matou, for understanding my predicament. I will escort you out."

The two then left the study.

In the courtyard.

Rin pretended to play house with Sakura. Although her sister Sakura was very cute, as an adult in her previous life, Rin Tohsaka truly couldn't muster any interest in a little girl's pretend play. At this moment, Rin wanted to seize the time to study Magecraft.

Suddenly, Sakura, who was holding a doll, had a distressed look on her face. Rin immediately turned to look behind her.

Tokiomi Tohsaka was escorting Zouken Matou out of the house and into the courtyard. Rin, immediately understanding, grabbed Sakura's hands and comforted her.

"Don't worry, Sakura. Dad promised us. He won't send you to the Matou family for a year. Sister is so talented, she can easily achieve the promise with Dad with a little effort. Sakura will never be sent away again. Believe in your sister!"

"Mhm, thank you, sister."

After comforting Sakura, Rin turned around, blocking Sakura, and glared at Zouken Matou, that old worm.

"Hehehe, is this the future head of the Tohsaka family? So full of spirit."

"Rin, don't be so rude. Go and greet Old Man Matou."

Rin reluctantly turned her head and said perfunctorily.

"Hello, head of the Matou family."

Tokiomi Tohsaka looked at the sulking Rin and turned to Zouken Matou with a chuckle.

"I apologize, Old Man Matou. My upbringing is not strict, so you've witnessed a joke."

Zouken Matou waved his hand.

"It's alright. Well, Tokiomi, this is as far as I go. I look forward to your good news in a year."

After speaking, Zouken Matou, leaning on his cane, left the Tohsaka residence.

Watching Zouken Matou depart, Rin shouted at his retreating back.

"Don't get your hopes up. Sakura will definitely not be taken away by you."

Tokiomi Tohsaka shook his head and patted Rin's head, saying.

"Then you'll have to work hard and fulfill our promise within a year."

Rin confidently patted her chest and said to Tokiomi.

"Of course, I will definitely fulfill our promise."

In the following days, Rin began to work diligently. Besides attending school (kindergarten), she spent all day in the basement researching magecraft, striving to fulfill her promise with Tokiomi as soon as possible.

In the Tohsaka family's basement, Rin looked at the shattered crystal before her and scratched her head in annoyance. She walked over to a nearby bookshelf, took out a thick, heavy book, and laboriously moved it to the table, attempting to find the reason for her failure.

Tokiomi Tohsaka entered the basement and saw Rin engrossed in flipping through the book on the table. He nodded with satisfaction and, without disturbing her, came up behind Rin. Seeing the shattered crystal on the table, he smiled faintly.

"It seems even our little genius has moments of failure."

Startled by the sudden sound, Rin let out a scream. After realizing it was Tokiomi Tohsaka, she said with a mixture of annoyance and exasperation.

"Dad, walking up behind someone and making noise like that can scare people to death."

"Alright, alright, it's Dad's fault. Rin, are you encountering any difficulties in your magecraft research? Do you need Dad to help you solve them?"

Rin's expression turned serious. She moved aside and said to Tokiomi Tohsaka.

"Dad, I was trying to compress and convert some Runic characters into the crystal, but the crystal shattered after the conversion."

"Let me see the Runic script you were trying to convert."

Upon hearing this, Rin quickly picked up a crumpled piece of paper from the floor, smoothed it out, and showed it to Tokiomi Tohsaka.

Tokiomi Tohsaka looked at the densely packed Runic characters on the paper, and his eye twitched. He realized he couldn't understand them at all.

Rin stared at Tokiomi, who was alternating between shaking his head and smiling, with a puzzled expression. This was the first time Rin had ever seen Tokiomi in such a state.