"Sorry, Rin. Father can't understand your magecraft research. It seems you've completely surpassed me in certain fields already. Rin, since you've run into a problem you can't solve, why don't you go upstairs and rest? Clear your thoughts before continuing your research."
Rin nodded helplessly. After gathering up the crystal fragments on the table, she left the basement.
Rin went upstairs along the staircase. The moment she saw Sakura waiting for her outside the basement door, her mood immediately brightened, and she happily pulled Sakura into conversation.
Aoi Tohsaka, who was tidying up the house, smiled blissfully as she watched her two daughters getting along so well.
Basement.
Tokiomi Tohsaka carefully stored away the paper on which Rin had written the Runic Alphabet, then shook his head.
"Rin is good at everything except for that impatient temperament of hers. Sigh! Such an important thing, and she crumpled it into a ball and casually tossed it onto the floor."
He then walked over to the table and took a small box from his pocket. Inside was an ancient piece of snakeskin—the Holy Relic Risei Kirei had found for him at the church today.
Tokiomi Tohsaka studied the snakeskin for a long time before slowly closing the box and slipping it back into his pocket. He took the crystal fragments beside him and skillfully drew a magic circle on the table.
"Risei, thank you so very much. According to our previous plan, I hope Kirei can come visit tomorrow as my disciple."
Risei Kirei's voice then came from the magic circle.
"Mm. Tokiomi, I'll arrange for Kirei to visit the Tohsaka Estate tomorrow."
"That would be wonderful. With your and Kirei's help in this Holy Grail War, we will surely achieve victory..."
That night, Rin was lying in bed when the system suddenly issued a notification beside her ear. She put on an outer robe, stood before the window, gazed at the silent courtyard, and slowly opened the System Panel.
As Rin's research into Stiyl's magecraft deepened, another section was unlocked on the system: "Exchange." Rin opened it, and a dazzling array of magecraft from the A Certain Magical Index world appeared before her.
Rin kept scrolling through the exchange list, looking at one grayed-out, unavailable spell after another. She scrolled faster and faster until she quickly reached the bottom.
"System, why can't any of these spells be exchanged? And what is the difference between exchanges and rewards?"
"The power of the mystic path is the power of miracles. Only when the host achieves miracles impossible for humanity can you gain exchange qualifications. Rewards are granted only after you achieve deeds that would be widely remembered by humanity."
Rin thought of the Holy Grail War that would begin in a little over a year. After pondering for a moment, she made her decision. Tomorrow, she would fight Father, display the power to fulfill their agreement, and test whether she could receive a reward. A five-year-old girl defeating an adult Magus should meet the conditions, right?
Rin Tohsaka's Path to Becoming a Demon God: Roar, King of Witch Hunters!
The next day.
As the dismissal bell rang, Rin swiftly stuffed all the preschool textbooks from her desk into her schoolbag. Once she had packed them away, she grabbed her bag and raced toward Sakura's classroom.
Rin quickly arrived outside Sakura's classroom and immediately spotted her little sister waiting for her with her schoolbag. Rin happily waved at Sakura at once.
Sakura politely said goodbye to the classmates around her before slowly walking over to Rin.
"Big Sister."
"Mm, Sakura, let's go."
Rin grabbed Sakura's hand and led her briskly out of the campus—kindergarten.
The two sisters soon reached the school gates. They looked around in confusion. Normally, Aoi Tohsaka would have been waiting at the entrance to pick them up after school, but today she was late.
Seeing Rin anxiously gazing into the distance, eagerly waiting to see Aoi Tohsaka, Sakura asked.
"Big Sister, why are you in such a hurry to get home today?"
Rin pulled Sakura closer and leaned down to whisper into her ear.
"Sakura, when we get home today, I'm going to challenge Father. I think I can fulfill our agreement now."
Sakura stared at Rin in shock.
"What? Big Sister, you're going to challenge Father?"
"Keep your voice down, Sakura. That's right, I'm going to challenge Father. Then you won't have to worry about being sent to that old bug's house anymore."
"But Big Sister, Father is so strong. You've only studied magecraft for less than a year. Can you really defeat Father? And what if one of you gets hurt? Also, Big Sister, why do you call Old Man Matou an old bug?"
Rin had wanted to make Sakura happy, but Sakura's first thought was not that she would no longer be sent away to another family. Instead, she worried that Rin and Tokiomi might get hurt. Rin could only force out an explanation.
"Don't worry, Sakura. Father definitely won't let me get hurt. And like you said, Father is so strong, so how could he get hurt? Zouken Matou looks just like a disgusting bug. What's wrong with calling him an old bug?"
Only then did Sakura nod in relief.
"That's right. Father would never hurt Big Sister, and Father is so strong. How could he get hurt?"
Rin thought to herself, If Tokiomi Tohsaka really were that strong, it would be great. In her memories of her previous life, Tokiomi Tohsaka had been easily backstabbed and earned the title of the Cauldron of This World. He simply was not strong enough.
Soon, Aoi Tohsaka drove up to the school gates. Sakura tugged at the brooding Rin, signaling that their mother had arrived.
Rin gave up thinking about it, took Sakura's hand, and walked over to the car. She opened the rear door, let Sakura get in first, then climbed in herself and shut the door.
"Mom, why are you so late today?" Rin asked curiously.
"Big Sister, Mom is only five minutes late."
"Sakura, don't roast me."
Aoi Tohsaka looked at her daughters playfully fighting through the rearview mirror and answered cheerfully.
"Sorry, Rin, Sakura. We had a guest at home today, and I was delayed while preparing the guest room. Can you forgive Mommy?"
Sakura, who was pinned beneath Rin, hurriedly stopped playing around.
"Mom, it's fine. Sakura doesn't blame Mom. Big Sister, you don't blame Mom either, right?"
"Sakura is so sensible. Rin, do you blame Mommy?"
Rin released Sakura, sat upright, and asked in confusion.
"Of course not. By the way, Mom, who is today's guest? Why is he staying at our house?"
"Ah, the guest is your father's new disciple. His name is Kirei Kotomine, and he's a very polite person. Rin, Sakura, you should learn from him more, especially you, Rin. You must learn to be polite, understand?"
The moment Rin heard the name Kirei Kotomine, her pupils contracted. That was right—this guy was the murderer who would kill Father, and he would toy with her for the next ten years.
Aoi Tohsaka looked at the suddenly dazed Rin through the rearview mirror. She slowed the car, turned back to look at Rin, and asked nervously.
"Rin, what's wrong?"
"Ah, it's nothing, Mom. I just thought of something."
Seeing that Rin was fine, Aoi Tohsaka let out a breath of relief.
"If you're fine, then don't scare me like that..."
Soon, the car returned to the Tohsaka Estate. Once it came to a stop, Rin opened the door, grabbed her schoolbag, and dashed into the house.
After entering the house, Rin followed the voices and quickly found Tokiomi Tohsaka and Kirei Kotomine drinking tea in the living room.
Kirei Kotomine looked curiously at the genius daughter his teacher had mentioned as Rin entered the living room.
"Rin, why are you in such a rush? Have you forgotten the Tohsaka family precepts? And this is Kirei Kotomine, my new disciple and your senior brother. Go greet your senior brother."
Rin hurriedly straightened her appearance before slowly speaking.
"Hello, Senior Brother. My name is Rin Tohsaka. Please take care of me in the future."
Tokiomi looked at Rin, nodded in satisfaction, and spoke.
"Rin, what is it?"
"Father, I want to challenge you. I want to fulfill our agreement."
Tokiomi Tohsaka looked at Rin in some surprise. Does this child already have the confidence to fight me? But then he considered that, no matter how much of a genius his daughter was, she was only five and could not possibly fight him. Not wanting to crush Rin's confidence, Tokiomi Tohsaka thought for a while before slowly standing up.
"Rin, how about this? Since Kirei is here, you will fight Kirei this time. If you can defeat him, I'll consider the agreement fulfilled. I'll have to trouble you with this, Kirei."
Kirei was slightly stunned, then nodded in agreement.
Rin tilted her head and glanced at Kirei Kotomine. Should she teach this future mortal enemy a lesson now?
Seeing Rin's expression, Tokiomi spoke up with a warning.
"Rin, don't underestimate Kirei. Before becoming my disciple, he was an Executor of the Church. If you look down on him, you'll suffer for it. All right, follow me to the back mountain."
As Tokiomi Tohsaka rose and left the living room, Rin and Kirei Kotomine immediately followed behind him toward the back mountain.
Aoi Tohsaka and Sakura, who had just entered the house, saw the three preparing to leave and asked curiously.
"Dear, dinner will be ready soon. Where are you taking Rin and Kirei?"
Tokiomi Tohsaka smiled at his wife and second daughter.
"Rin's magecraft has improved quickly lately, and she happened to make a request herself. I'm taking her out for a little pre-dinner exercise. Aoi, take Sakura and arrange dinner. We'll be back soon."
Seeing Tokiomi Tohsaka's confident and elegant bearing, Aoi Tohsaka nodded at ease and led Sakura into the house.
The back mountain behind the Tohsaka Estate.
After setting up a barrier to drive away bystanders, Tokiomi Tohsaka came over to Rin and Kirei Kotomine.
"Kirei, although I've always boasted that my eldest daughter is a genius, she is still only a five-year-old child. Please be sure to go easy on Rin. Rin, you must also be careful, understand?"
Kirei Kotomine nodded.
"Master, I understand. Junior Sister, you make the first move."
Hearing Tokiomi Tohsaka and Kirei Kotomine's exchange, Rin curled her lips in dissatisfaction at Tokiomi looking down on her. Just wait. I'll make you both gape in shock soon. And this future enemy needs a proper lesson too.
"Hmph, don't underestimate me. Watch me take you down in one go, 'Senior Brother.'"
She then threw a large handful of crystal fragments engraved with the Runic Alphabet around her and raised her right hand to begin chanting.
"MTWOTFFTO (one of the five great elements that make up the world)
IIGOIIF (O great primordial flame)
IIBOL (the blessed light that nurtures life)
AIIAOE (the judgment light that punishes evil)
IIMH (while bringing peace and happiness)
AIIBOD (it also destroys the misfortune of cold, darkness, and frost)
IIZF (its name is flame)
IIMS (its duty is sword)
ICR (manifest)
MMBOP (devour my body and become power)
─── Innocentius (Witch-King Slayer)!"
"Roar!"
For the first time in this world, the giant made of flames let out a roar.
Rin Tohsaka
Host: Rin Tohsaka Age: 7 Affinity: Five Great Elements Strength: E- Endurance: E/A+ (A+ when using Water of Life with sufficient mana) Agility: E Mana: C+ Luck: ?? Mystic Code: None Mystic Path Rank: C+ Mystic Path Domain: (Possesses a complete system of magecraft) Runic Alphabet: The Runic Alphabet consists of twenty-four magical symbols representing "mystery" and "secrets." It is a magical language used by Germanic peoples since the second century AD and is also the origin of Old English.
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