Right.
If it was himself now... he could do it!
"────Constitutional material, unravelling."
He let the magical energy flow naturally.
"────Basic framework, alteration."
Before him was a magus's crest.
It possessed a history spanning several centuries, the crystallization of the Lehrmann Family's hard work and wisdom amassed over a dozen generations.
To Shirou, things with a long history were always worthy of awe.
As a first-generation magus, he understood better than anyone that the achievements of magi today were not accomplished overnight.
Therefore, he had to treat it with extreme care and affection...
Injecting one's magical energy into an object outside oneself was like mixing in poison.
To prevent that and turn the poison into medicine, one had to correctly grasp the target's structure and inject magical energy into the open gaps.
The reinforcement of a magecraft crest was hundreds or thousands of times harder than the simple reinforcement of an object--
"────Constitutional material, reinforcement."
Shirou was immensely grateful to Ayako Miyadera, who had forcibly dragged him into the archery club.
Without her pestering him, his archery would have probably withered away rapidly, as he was already up to his ears in magic and swordsmanship every day.
Thanks to the archery club's practice, Shirou was able to keep his heart like a mirror-clear pond just like this.
"All processes, complete."
Accompanied by a pop sound as if something had shattered, Shirou let out a long breath.
"Eh? Ah? My body suddenly feels warm!"
Yvette stroked her neck, her cheeks flushing.
"Th-This is...
Lord Shirou's magical energy has flowed into my Magic Circuits, reinforcing my crest... It's, it's so good~~~~~"
Yvette slumped into Shirou's arms, narrowing her eyes in bliss as she rubbed her crossed legs back and forth.
"...Whoa."
Rin Tohsaka and Luvia watched from the side in dumbfounded silence.