From Today On, Rin Tohsaka Walks the Path to Becoming a Demon God / Rin Tohsaka Works Hard to Become a Demon God!

I, Rin Tohsaka, Will Become a Demon God in Type-Moon. Author: Nuclear Brilliance

"Synopsis: Child, on the day you were born, all of Fuyuki City echoed with your name: 'Rin Tohsaka.'"

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

You must remember that we have always lived in this world through elegance and 'wisdom.'

I also believed that you would use the power of 'dropping the ball' with caution.

But true victory was making me bear the blame.

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

Chapter 1: From Today On, Rin Tohsaka Walks the Path to Becoming a Demon God

Fuyuki City, dusk fell.

Tokiomi Tohsaka politely saw Zouken Matou off together with his wife and daughters.

Once Zouken Matou had disappeared from sight, Rin Tohsaka, who stood nearby, could not help asking Tokiomi Tohsaka.

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

Tokiomi Tohsaka looked at his eldest daughter's tightly furrowed brow, then crouched with a smile and patted Rin Tohsaka's head.

"Father understands that sending Sakura away makes you very upset, Rin. But this is for Sakura's better future. Father is proud to have given birth to two daughters as outstanding as you. However, the Tohsaka family's magecraft can only support one of you. This troubles me often as well. Now that Sakura can be adopted by the Matou family, another of the Three Great Families, this 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 before she could continue arguing with Tokiomi.

"Little Rin, don't argue with your father. He's doing this for your own good."

Seeing that the matter could not be changed, Rin Tohsaka could only give up and return unwillingly to her room.

Back in her room, Rin Tohsaka thought of the notification she had just heard. Her gaze turned resolute, and she clenched both fists, as though she had already made some sort of decision.

"System, activate."

"Understood. Myriad Worlds Magic System activating. Activation complete. Rin Tohsaka, welcome to the Myriad Worlds Magic System."

Some might find this strange. That was right—this Rin Tohsaka was not the original one, but someone who had transmigrated from a certain Blue Planet.

Rin Tohsaka had completely forgotten who she had been in her previous life, even her name. Having forgotten nearly everything, she only vaguely remembered that she was a transmigrator. That was how she became Rin Tohsaka as an infant. Perhaps because she had lacked familial affection or care in her previous life, the meticulous care of the Tohsaka couple during her growth after transmigrating allowed Rin Tohsaka to calmly accept her new life. Until today, when Zouken Matou appeared, those forgotten memories suddenly resurfaced. As her memories awakened, so did the tragedies that would later befall this family. Thinking of the many tragedies awaiting them, Rin Tohsaka finally understood that the voice that often appeared in her mind was not some demon, but the cheat granted to her as a transmigrator—her lifeline.

As the system that had lain unused for several years activated properly, Rin Tohsaka finally breathed a sigh of relief, feeling that she had gained the means to break the deadlock. She began communicating with the system in her heart.

"System, what functions do you have?"

"This system allows the host to master the different paths of magic from the myriad worlds."

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

"Host, please summon the panel and check for yourself."

Following the system's instructions, Rin Tohsaka quickly opened the System Panel.

Most of the options on the panel were darkened mystery question marks. The only selectable option at present was Claim Reward.

Rin Tohsaka operated the panel and opened Claim Reward. Three people and information on the magic they wielded appeared on it: Stiyl Magnus, Osmond, and Dehaina.

"So they're from an A Certain Magical Index world, The Familiar of Zero, and Dungeons & Dragons? System, will different choices affect anything later on?"

"Different choices will affect the world tendencies of future rewards, though they can be freely modified later."

"So I'm choosing a magic system right now?"

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

"Little Rin, come wash your hands and eat."

Rin Tohsaka irritably scratched her head and made her decision.

"I'll choose Stiyl. After all, I'm only familiar with this one. Besides, most of Magic Index's magical theories also exist in our magecraft, so it'll be more convenient to use and won't cause any trouble. Stiyl's King of Witch Hunters is also very useful. It's decided—it's you!"

As Rin Tohsaka made her choice, it felt as if something had been forcibly stuffed into her brain. A wave of dizziness struck as vast amounts of magical knowledge flooded into her mind.

"Little Rin, what are you doing? Come eat with Mother. I know you feel bad that Sakura is being sent away, but the Little Rin I know is such an obedient good girl."

Hearing Aoi Tohsaka's voice outside the door, Rin Tohsaka shook her head to ease the dizziness and hurriedly opened the door.

"Okay, Mother. I was thinking about something just now, so I didn't hear you."

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

Soon, under Aoi Tohsaka's guidance, Rin Tohsaka finished washing her hands and entered the dining room. Tokiomi Tohsaka sat elegantly at the head of the table. Seeing the mother and daughter enter, he spoke with a smile.

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

Aoi Tohsaka led Rin Tohsaka to the table and gently pulled out a chair for her. Only after Rin Tohsaka sat down did she take a seat beside Tokiomi Tohsaka.

Seeing her sister sit down, Sakura softly said to Rin Tohsaka.

"Big Sister, don't worry about me. Father must have arranged this because it's for my own good."

Rin Tohsaka turned and stared at Sakura before her. Sakura's expression was calm, as though she were not the one being sent away. Yet her dim eyes still betrayed her true thoughts. After all, what child would be willing to have her father give her to someone else?

Rin Tohsaka turned back, slammed her left hand against the table, rose to her feet, and spoke to Tokiomi Tohsaka.

"Father, I've decided. Let Sakura inherit the family's magecraft and crest. I'll forge my own path, so Sakura won't have to be sent away."

Tokiomi Tohsaka frowned as he looked at his eldest daughter, who had suddenly erupted, and spoke calmly.

"That is impossible. The path of magic is not something one can simply walk through at will. Besides, Rin, you are still young and understand nothing. Stop making trouble."

"Father, I haven't even tried. How do you know it's impossible? I'm the genius you always talk about. I'm a genius, so why can't I do it?"

After saying that, Rin Tohsaka raised her right hand and chanted softly.

"TIAFIMH, IHTSOTS, AIHTR."

A Flame Sword radiating scorching brilliance appeared in Rin Tohsaka's hand. Waves of heat rolled from it, displaying its extraordinary power.

"What do you think, Father? This is magic I created myself using the books in the basement. I'll definitely be able to forge my own path of magic."

Tokiomi Tohsaka stared at the magic Rin Tohsaka had used, his eyes filled with disbelief. He could not imagine that his eldest daughter, who had only studied magic for a few months, had created magic of such power by herself. This was no longer mere genius—it was talent that completely surpassed genius. As expected, Rin Tohsaka was the treasure Heaven had bestowed upon him.

"Rin, you truly are a genius! You've studied magic for only a few months, yet you can create and use magic like this. Was it created through the Runic Alphabet? This is astounding, Rin!"

Rin Tohsaka dispelled the magic in her hand and looked at Tokiomi Tohsaka expectantly, waiting for him to say that Sakura would no longer be sent away.

"Father, can Sakura stay?"

Tokiomi Tohsaka's expression grew grave as his mind raced. Only after a while did he seem to figure something out and speak.

"Rin, I was right to choose you as the Tohsaka family's heir. With talent like yours, you will surely fulfill the Tohsaka family's long-cherished wish."

After praising Rin Tohsaka, Tokiomi looked at her hopeful eyes, then at Sakura, who could no longer keep up her pretense and whose eyes likewise revealed that she did not want to be sent away. A smile appeared on his lips once more.

"How about this, Rin? One year. If, within one year, you can demonstrate the ability to protect this family, I will not send Sakura away. At the same time, I will teach Sakura magecraft as well. But do not mention again that you will not inherit the crest. Do you understand? All right, sit down and eat."

Though Rin Tohsaka had not completely achieved her goal, now that she had activated the system, she was very confident that she could convince Tokiomi Tohsaka within a year. Happily, she hugged Sakura.

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

"Mhm. Thank you, Big Sister."

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

Several days later, Tokiomi's study.

Zouken Matou sat calmly in a chair, leaning on his cane as he spoke to Tokiomi Tohsaka by the window.

"Tokiomi, you should know that Sakura being adopted into our Matou family is the best choice."

Through the window, Tokiomi Tohsaka smiled as he watched his daughters playing happily in the courtyard and replied without hesitation.

"Yes, Old Man Matou, you are right. But I must also consider the opinion of the future head of the Tohsaka family. Therefore, I hope you can accept that I will decide whether Sakura will be adopted into the Matou family after one year."

Zouken Matou slowly rose to his feet.

"Very well. Then one year from now. I look forward to you making the correct choice, Tokiomi. I shall take my leave."

Tokiomi Tohsaka turned around elegantly.

"Thank you, Old Man Matou, for understanding my difficulties. Allow me to see you out."

The two then left the study.

In the courtyard.

Rin pretended to play house with Sakura. Though her little sister Sakura was very cute, Rin, who had been an adult in her previous life, truly could not bring herself to take an interest in a little girl's game of house. At that moment, Rin wanted even more to make use of her time to study magic.

Suddenly, Sakura, who was holding a doll before her, went pale. Rin immediately turned to look behind her.

Tokiomi Tohsaka was accompanying Zouken Matou out of the house and into the courtyard. Understanding at once, Rin grabbed Sakura's hands and comforted her.

"Don't worry, Sakura. Father promised us that he won't send you to the Matou family within the year. Your sister is such a genius that I'll fulfill Father's agreement with barely any effort. You'll never be sent away again, Sakura. Believe in your sister!"

"Mhm. Thank you, Big Sister."

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

"Hehehe, so this is the future head of the Tohsaka family? She's quite lively."

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

Rin unwillingly turned her head away and perfunctorily said.

"Hello, Head of the Matou family."

Tokiomi Tohsaka looked at Rin, who was throwing a tantrum, then turned to Zouken Matou with an amused smile.

"My apologies, Old Man Matou. My discipline at home has been lax. I have made a spectacle of myself."

Zouken Matou waved a hand.

"It is no matter. All right, Tokiomi, this is far enough. I look forward to your good news one year from now."

With that, Zouken Matou leaned on his cane and left the Tohsaka residence.

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

"Don't look forward to it! You'll never take Sakura away!"

Tokiomi Tohsaka shook his head and stroked Rin's hair.

"Then you must work hard and fulfill our agreement within one year."

Rin confidently patted her chest and spoke to Tokiomi.

"Of course. I'll definitely fulfill our agreement."

In the days that followed, Rin began working diligently. Aside from going to school—kindergarten—she spent every day in the basement researching magic, striving to fulfill her agreement with Tokiomi as soon as possible.

In the Tohsaka family basement, Rin looked at the shattered crystal before her, scratched her head in frustration, then walked to a nearby bookshelf and took out a heavy book. She struggled to carry it to the table, trying to find the reason for her failure within its pages.

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

"It seems our little genius has her moments of failure too."

Startled by the sudden voice, Rin let out a scream. Only after realizing that it was Tokiomi Tohsaka did she say irritably.

"Father, suddenly speaking from behind someone will scare them to death."

"All right, all right, it's Father's fault. Rin, have you encountered some difficulty in your magical research? Do you need Father to clear up your confusion?"

Rin's expression turned serious. She stepped aside and spoke to Tokiomi Tohsaka.

"Father, I tried to compress and convert part of the Runic Alphabet into a crystal, but the crystal shattered after the conversion."

"Show me the runes you intended to convert."

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

Tokiomi Tohsaka looked at the densely packed Runic Alphabet on the paper, and the corner of his eye twitched. He realized that he could not understand any of it at all.

Rin watched Tokiomi shake his head one moment and smile the next, staring at him strangely. It was the first time Rin had ever seen Tokiomi like this.