Shirou, who returned from the Fairy Kingdom

That's right.

If it were me now... I could do it!

"────Composition of materials, explanation."

Let the magic flow naturally.

"────The basic structure, changes."

What I see before me is the magician's mark.

With a history spanning hundreds of years, it represents the culmination of the efforts and wisdom of more than a dozen generations of the Lehman family.

For Shirou, things with a long history are always worthy of awe.

As a first-generation magician, I understand better than anyone else that the achievements magicians have today were not accomplished overnight.

Therefore, it must be treated with extra care and tenderness...

Infusing one's own magic into objects other than oneself is like adding poison.

To prevent that, turning poison into medicine requires a proper understanding of the object's structure, injecting magic into the open spaces.

Strengthening a magical crest is hundreds or even thousands of times more difficult than simply strengthening an object.

"────Constitutes material, reinforcement."

Shirou was incredibly grateful to Ayako Misaki, who had forcefully dragged him into the archery club.

If it weren't for her nagging, my archery skills would probably have deteriorated rapidly; I'm already too busy with magic and swordsmanship every day.

Thanks to the archery club's training, Shirou is able to keep his mind as clear and calm as a mirror.

"The entire project is finished."

With a "crack" sound, as if something had shattered, Shirou let out a long breath.

"Huh? Hey? My body suddenly feels warm!"

Yvette stroked her neck, her cheeks flushing.

"This, this is..."

"Lord Shirou's magical power is flowing into my magic circuits, strengthening my Crest... Ah, so good~~~~~"

Yvette slumped into Shirou's arms, her eyes squinting happily, her legs rubbing back and forth.

“………………Waaah.”

Rin Tohsaka and Luvia watched in stunned silence.

"Amamiya-san... how did you learn that kind of technique...?"

Rin bit her thumb with some resentment: To actually reinforce the circuits of magic, this is something I've never heard of before!

Do you think you're some kind of nanomaterial from the mythical era?

But... Shirou succeeded.

Just how high a level of magical precision would it take to do something like this?

Rin Tohsaka believes that her greatest strength lies in the precise control of magic.

Indeed, that is true. Her magical precision is unparalleled, and even in the 2000-year history of the Clock Tower, it would be difficult to find anyone who can match her.

In terms of the direction of battle, if Luvia is a genius who is good at using a large number of gems to bombard the enemy continuously, then Rin Tohsaka is a genius who can achieve decisive results with just a few gems.

Even Rin Tohsaka, who was in such a state, was shocked by Shirou's divine skills.

"Enhancement magic," which can strengthen a magic crest, even if it's only temporary... has the value to change the modern magic world!

The seal is designated, no...

If things go wrong, she might even achieve the "Grand" rating of the Clock Tower like Aozaki Touko...!

Meanwhile, Luvia was focused on something else.

"W-Can it really feel that good? (Swallows hard)"

Shirou pulled away Ivy, who was taking advantage of him, and turned to the two people beside him: "Come on, next one."

"Huh? Me... I want some too? No!"

Rin Tohsaka took a step back in alarm, but it was too late.

"The Tohsaka family's mark... is on this arm, isn't it?"

—Shirou grabbed the girl's wrist.

"Eee ...

Rin Tohsaka's screams echoed through the blizzard-swept forest, but quickly turned into what sounded like very comfortable panting.

"That's it."

Following the Rayman family, the magic crests of the Tohsaka and Edelfelt families were also strengthened.

I don't know if it's because it's my first time, but the side effects are quite severe.

Shirou looked at the three people, whose faces were flushed and who were fidgeting.

There was nothing we could do but let them rest for a while.

Shirou primarily improved the efficiency of his mana circulation.

Because the strongest magician he knew in the modern era (Aozaki Aoko) was a superhuman in this field, Shirou focused his efforts on improving in that direction.

Next time we have the chance, we can try enhancing other aspects... Hmm, let's use Sakura as an example...

Rin Tohsaka glared at her fiercely: "You're not allowed to lay a hand on that child!"

"……whispering sound."

After resting for half a minute, they set off again.

Shirou's "enhancement" not only allowed the girls to move freely even in a space that was almost otherworldly, but also seemed to instill a sense of confidence in them.

In that case, even if the enemy is a cannibalistic forest, it won't be so scary.

When this atmosphere arose within the ranks, they finally attracted the enemy's attention.

Shirou stopped in his tracks.

"Prepare for battle."

The three girls beside him nodded in unison.

Shirou gazed into the deepest part of the forest and said, "I won't lift a finger. You guys can handle this guy, right?"

"Ah."

"understood."

"Leave it to us!"

Having traveled together for a while, they vaguely sensed that Shirou seemed to be wary of something.

In that case, we'll deal with the dead men who are blocking the train's progress!

Suddenly, the forest itself began to move.

The branches bent like whips, tracing sharp arcs towards the crowd.

“Gandr!”

The demonic branch that looked like it could easily pierce a human body like a piece of paper was torn to shreds by Rin Tohsaka with ease.

Unlike the curses she usually unleashed, the girl's jet-black curse bullets had an overwhelming density.

Shirou often compared Rin Tohsaka's cursed bullets to sniper rifle bullets, which could easily shatter brick walls, but now what she was firing could no longer be called bullets—it was a veritable rocket.

Rin Tohsaka has never squandered her magic power so recklessly.

After all, the magic of the Tohsaka family is closely related to gems. Even the magic power consumed when casting curses needs to be replenished by gems on the battlefield.

Rin typically uses gems for attacks.

However, after receiving Shirou's "enhancement", he no longer had the trouble of balancing recovery and offense.

A black curse, worthy of being called a rocket, was continuously fired from the twin-tailed girl's fingertips, destroying all the rapidly approaching vampire branches.

...The body is so light.

The flow of magic has never been so smooth.

Not only Rin Tohsaka, but Yvette and Luvia also had the same idea.

"Rin-chan is so energetic! Okay~ I can't lose either!"

Yvette ripped off the glowing blindfold.

The eyes hidden beneath the blindfold are not made of flesh and blood, but are glowing red rubies.

"Ta-da! Yvette's modified Mystic Eyes, the Flame Version! It's coming soon!"

boom------! !

It burst into flames as if the void had exploded.

The swarms of branches that came crashing down, along with the snowflakes that were blown in, danced in the flames.

As Yvette followed her gaze, a fierce vortex of flames melted the ice and snow, and burned the surrounding tree branches to ashes.

That's... the Noble Color?

Shirou crammed on the knowledge about the Mystic Eyes on the train and can now roughly distinguish the levels of the Mystic Eyes.

The magic eye, crafted with gemstones, has achieved a noble hue. In terms of craftsmanship alone, she is even more outstanding than Aozaki Touko.

"Whew! This is all thanks to the power of Shirou-sama's love!"

Yvette made a V sign.

"Don't stop, keep moving forward!"

Rin Tohsaka crouched down, her long, beautiful legs glowing with a magical emerald light.

She used magic to enhance her body, and then took a step and began to run across the snow.

Everyone followed closely behind.

Faced with even more blood-sucking branches, Rin Tohsaka pulled out her trump card this time.

"drink--!!"

The steel-like limbs not only pulverized the branches, but also the entire tree.

Snowflakes drifted down, and black hair danced in the air.

The girl sprinted across the snow.

His sharp, steady, and naturally agile movements were like a human-shaped red whirlwind.

"Okay, let's switch!"

Without hesitation, Yvette stuck her finger into her eye socket.

She changed her prosthetic eye, which was made of processed gemstones, as if loading a bullet.

This time it's lolite.

This gemstone was believed to enhance inspiration and was used by sailors as a substitute for a compass. It is a sacred stone mentioned in ancient Scandinavian legends.

"Ouch! That hurts... Come on, come this way!"

Yvette found the location of the tree that could be called the Brain Body, the location of the Son of the Fuhai Forest.

Now that things have come to this, no amount of death can stop the girl's advance.

The branches intertwined in a complex and dense mass, resembling a raging torrent dispersing the snow, looking almost like a giant python, but they were reduced to ashes by the combined attack of Rin Tohsaka and Luvia.

"right here!"

After traversing the twisted forest, the group finally saw a tree of extraordinary size.

The fact that the vampire branches have become more aggressive since earlier indicates that this is the enemy's weak point.

"Huh...you...?"