Heroic Spirit: I, Shinji, have tried my best.

"Oh? What's wrong kid? Why do you suddenly want me to teach you how to fight?"

“…Please, with my current strength, I can’t protect anyone, and your fighting style is the most suitable for me, so…please teach me how to fight.”

"Hmph, stop kidding! I'm a Heroic Spirit and you're just a third-rate magician who changed careers. Why do you think your efforts can defeat others' lifelong struggles?"

"I…at least I don't want to be helpless like that again."

As soon as Shirou Emiya woke up, he silently found Red A, hoping that he could help him train, but was denied... He also said that the Holy Grail War would not last long, and it was simply a pipe dream to let him grow to the point where he could fight against the Heroic Spirits...

However, when he thought about how the enemies had easily defeated him several times before and then hurt the people around him; he had promised Saber to fight with her, but if it wasn't for the sudden appearance of the Heroic Spirit, Saber would have died...

Powerless, powerless...

Red A looked at the boy who was suddenly in a dilemma, with a hint of nostalgia in his eyes...

Back when he had just started making deals with the restraining force, the rule of killing the minority to save the majority made him collapse at one point. The rules only allowed for two choices, and he didn't have the strength to break the rules.

Now that he has returned to the past and seen his past self, it is as if he is standing at that fork in the road again. However, the difference is that this time there is a heretic like Shinji, and even he admires this man's cunningness.

And this time he didn't claim to be a "partner of justice", he just wanted to protect his friends. This made Red A not only not disgusted with his past self, but also somewhat admired him.

"Eh? What are you...doing!?"

Red A stood up, grabbed Shirou's collar and walked out...

But what he said was not wrong. Even if a magician had good physical functions and even if he had a treasure to protect him, he still couldn't fight against the Heroic Spirits, not to mention that the remaining ones were only the top ones.

"Hey, where are you taking me?"

Then it is definitely impossible to instantly become stronger, but some powerful abilities may be possible...

"I say...say something!"

Throwing the noisy Shirou to the ground, Shirou climbed up and looked around. He was taken to an empty room.

"Didn't you say that my fighting style is very suitable for you? Then do you know why?"

“…Why?”

Red A did not answer, but closed his eyes and chanted a spell...

"【Unlimited Sword Works】"

The surroundings changed in an instant, and the two appeared in the sand dunes filled with treasures.

“This is…the scene from that day!”

Because Shirou fainted at the time and didn't know that it was Red A's ability, I felt bleak and sad when I saw this scene again, but inexplicably there was a sense of familiarity...

"This is my heart-to-heart world, also called [Inherent Boundary], and I am you in the future, a failed you who has chosen a path of no return..."

Before Shirou could recover from his shock, Red A continued to speak seriously:

"If you really want to improve your strength in a short period of time, then find a way to learn it! These treasures on the ground are the weapons of the heroes I have fought with. In countless battles, I have encountered many kinds of enemies, and every experience I have will become my strength."

"This is mine, no... our strongest ability [Infinite Blade Works]."

"Next, I will use these Noble Phantasms to hunt you down, and you will have to continuously project Noble Phantasms to fight me, and integrate these experiences into your own mental world. As for the quantity... at least 10,000 Noble Phantasms will be needed!"

"Gu..."

Looking at the countless treasures stuck on the ground, it was almost impossible to project them all. Even if he projected dozens of them, it would cost him his life.

“Humph, are you scared already? Don’t worry, Saber is right beside you. You have a powerful treasure in your body. When you are next to Saber, you are almost immortal. This is your only chance to become stronger. It depends on whether you have the courage…”

"This...can I learn it?"

"…you ask me?"

"…I understand…Come on Archer, no…future me!"

Shirou drew his sword and invited Red A...

"Very good... I hope you can stay so energetic!"

……

"I see. I didn't expect you to find out more than me. You really are worthy of me."

In response to Shinji's praise, Medea did not show much pride, but instead looked unhappy.

"Tsk! It's those two arrogant guys who are discussing the battle plan over a glass of red wine..."

"If it were anyone else, they might have to be careful of a trap, but if it were those two pleasure monsters..."

"By the way, how's the magic trick I asked you to prepare going?"

"I am a magician from the Age of Gods. How can I say no to magic? But where do you want to set it up? We don't know where the battle will take place when the time comes."

"Don't worry, I had already prepared this before I got you...but Einzbern's castle is a bit out of the way."

Then he took out his phone and called Illya...

"Hey, is there something going on?"

"The guy with the golden glow last time was going to look for you. His target was the Holy Grail in your body."

“…What should I do?”

"Run to the center of Fuyuki City, or come to my place first. Your place is too far away for my plan to work."

"You already have a solution?"

"We have been preparing for a long time... The time of the enemy attack is uncertain, but it will be in the next two days. You'd better bring your two little maids. The Hero King will not spare their lives just because they are cute."

"I understand. I hope you will abide by our agreement..."

"That's natural."

I have to say this little girl is really efficient. I called at night and this guy knocked on the door in the early morning...

Shinji opened the door and looked at the three people in front of him with large and small bags. He was a little speechless. They came to his place for vacation? It was too rude!

"These are all the remaining magic materials in my house..."

"That's too polite! Please come in!"

She felt a little strange about the sudden change of expression of the man in front of her, but the focus of Illya's visit was not here. She reached out and held down Shinji who was about to search her bag.

"I'm sorry, I can't give you these now. Einzbern doesn't allow its secrets to be leaked. But these are used to buy the lives of the three of us from you..."

"Oh? You don't believe me?"

"No, but I don't think you will go all out to protect us who have nothing to do with you. You can think of it as my additional bargaining chip."

"Is that so? If you say so, what else can I do? ... Where is Berserker?"

"I left them in the castle. There is a barrier inside the castle to block detection. We came here secretly. When the enemy attacks, Berserker will delay them for a while for us."

"Oh! Surprisingly reliable!"

"Although I look a little younger, I'm even older than you. You don't need to treat me like a child."

"…Don't say that, or someone will investigate…"

"Um...Nisan, are you guys up yet?"

“…Um…There are so many people at home!”

"One, two, three, four, five... I'm still asleep, and I see so many beautiful girls!"

"…I'm sorry, Sakura. I'm afraid I'll have to ask you to cook more meals these days…"