When making programs, how can there be no back door!

Matou Shinji checks Matou Sakura's magic engraving every day and asks her if there is any abnormal state.

Magic engraving is not something that can be left alone after successful transplantation. The transplanted person may have a rejection reaction, and may even lose his life in severe cases.

Fortunately, Matou Sakura did not appear in these situations, even though her magic attribute was an imaginary number, which did not match the water attribute of the Matou family magic engraving, but the compatibility was actually very good, which made Shinji greatly relieved. .

Of course, during this month, Matou Sakura and Matou Shinji were unable to go to school, and could only teach themselves at home. These things were very easy for Matou Shinji. He had already mastered all the knowledge of elementary school and taught him Matou Sakura is even simpler.

The countryside is very quiet, the surrounding neighbors are also very mild, the air is much fresher than Fuyuki City, there are mountains and waters around, if everything is fine in the future, it should be a good choice to come here for vacation.

...

Although the Matou family withdrew from this Holy Grail War, in the end, there was still one lucky person (unlucky one) who qualified for the Holy Grail War, gathered seven masters, and joined this death game with great interest.

As the seven masters have arrived, the battle for the Holy Grail has begun to break out.

In the eyes of ordinary people in Fuyuki City, the city is like being punished by God. In a short period of time, disasters have occurred one after another, and various natural and man-made disasters have followed one after another.

There were murderers in the city before, and then there were several gas explosions in a row, which made some old people even feel that the city was cursed by some evil spirit.

In the originally prosperous city, not only did the number of tourists decrease significantly, but curfew was enforced at night, and even a store that opened at night was nowhere to be seen.

patter patter . . .

It was raining lightly in the sky, the rainwater flowed down from the eaves, and the water droplets fell rapidly towards the ground, but just after leaving the eaves, it suddenly hit a transparent wall, and the water droplets scattered in an instant.

Under the clinging of water droplets, a transparent butterfly hanging upside down under the eaves appeared. It instantly spread its wings and wanted to beat the water droplets on its body.

Whoosh!

A black key shot out of the air, tearing the transparent butterfly showing its shape and wings in half.

step - step -

Kotomine Kirei walked out of the corner, looked blankly at the fragments of the butterfly on the ground, and then looked at the eaves of the surrounding streets. After a moment of silence, he continued to walk forward, stepping on the butterfly's wings with his leather shoes. broken.

With a black umbrella in his hand, he picked up the black key he just threw from the ground, retracted it into his sleeve, and continued walking along the street.

A few transparent butterflies began to move, showing their bodies, and they flew towards the sky with great difficulty in the face of the rain, as if they were fleeing.

It was a pity that Kotomine Kirei only slightly raised his head, and then moved on, ignoring the butterflies around him, as if they didn't exist.

"Try me? It's a pity that I'm not interested in the people behind you, the teacher didn't order me to clean up you, and you didn't hinder me. Why should I pay attention to these vulnerable familiars?"

He was talking to himself without emotion, a voice that only Kotomine Kirei could hear. He walked directly on the street and disappeared around the corner, ignoring the flying butterflies, let alone many hidden in the Butterfly under the eaves.

After turning the corner, Kotomine Kirei unconsciously showed a smile at the corner of his mouth. Of course he wouldn't react. After all, on the bright side, his Assassin had already been killed by his teacher's Archer!

The black three-eyed crow flew over from a distance and landed on a telephone pole, looking at the path Kotomine Kirei had walked, showing a puzzled look.

"what!"

Matou Shinji, who was far away in the countryside, let out a small exclamation. Through the perspective and perception of the Three-Eyed Crow, he discovered an interesting fact that made him more aware of the Fourth Holy Grail War.

Although he had seen the Fourth Holy Grail War in his dream, the seven people acted at the same time, and there were many details that he did not know (the protagonist did not switch back and forth like the anime perspective), such as when he knew Kotomine Kirei and Tohsaka The minister is a group.

But I didn't know that Kotomine Kirei and Tohsaka Tokiomi had played a scene, which made the shining King of Heroes perform a coquettish killing show, and performed an inexplicable Assassin's head-giving drama for others.

It was in the middle and late stages of the dream that Matou Shinji realized that Assassin was not dead, but was hiding.

He just discovered something very interesting. As the creators of the Command Spell System, the Matou family has left a lot of backdoors. This knowledge is not only recorded in the magic engraving, but also in the Matou family's library. There are also some records.

And just now Matou Shinji discovered that he could actually feel the state of others' Command Spells, Kotomine Kirei's arm... The Command Spells exist well!

The command spell... The corners of Matou Shinji's mouth gradually twitched, this is not a simple thing, and even the command spell system is the work of the great magician Maqiri Sorgen (Mato Zoran) with noble ideals. The magic crystal is the result of condensing his lifelong wisdom.

Let the Heroic Spirit do things beyond common sense, this sentence is very correct, but it is definitely not their rude way of using it! Command spells are not so simple...

Matou Shinji smiled, and was mocking Matou Zuoyan. I am afraid that the backhand he set up at the beginning, except for the extension of life, I am afraid that he himself has forgotten about it!

This is really... sad.

Shaking his head, Matou Shinji continued to watch this crazy Holy Grail War, where the Three-Eyed Crow and the Crystal Butterfly appeared.

He didn't just watch the battle. In watching the battle of the Servants, the battle of the strong is the best teacher in martial arts. Matou Shinji's learning ability was originally very strong, and he learned a lot through watching the battle.

He believes that after the Holy Grail War is over, his swordsmanship will usher in a period of rapid growth!

...

In the panic of the residents of Fuyuki City, the Holy Grail War was proceeding in an orderly (very chaotic) manner, with children missing constantly, coupled with the massacre and the gas explosion, and even the luxurious Fuyuki Grand Hotel collapsed because of the gas explosion. !

The citizens of Fuyuki have been in doubt in their lives these days, and even some sensitive people have fled the city urgently, wanting to stay away from this doomed place!

It was another quiet night, and the streets were deserted, save for some rubbish being blown by the wind at a low altitude.

On the night when the curfew was clearly enforced, a little black-haired girl appeared, looking for something on the empty street.