Back in the present.
"One hundred and eighty seconds? So... only three minutes?"
After that simple calculation, Gawain sighed with some regret. But after thinking it over carefully, Sovell shook his head and said:
"You can't look at it that way. First, for a Heroic Spirit on Saber Alter's level, having her power descend into a human body for even a single second is a miracle bordering on True Magic.
"Second, with this boy's own mana supply combined with Balmung's ability to fire repeatedly, he could certainly unleash a relentless Noble Phantasm bombardment for three minutes.
"And as for that 'fragment that doesn't belong to him' he mentioned... I have an idea. Caules, you still have the Holy Relic you used to summon Berserker, don't you?"
Still feeling somewhat sorrowful, Caules nearly failed to react when Sovell suddenly called his name. "Huh? Oh, yes. Please wait a moment."
Before long, Caules returned with a sheet of rag paper covered in design blueprints for the so-called "Eve."
"These are Frankenstein's blueprints."
Thanks to rag paper's durability and toughness, the blueprints remained perfectly legible even after nearly two hundred years.
Sovell took the blueprints from Caules and began translating them word by word, until he came across a particular sentence:
"I glanced over this when it was first found a few months ago... Oh, here it is. Look here-"
As he spoke, Sovell spread the blueprints across the table, drawing everyone's eyes to the sentence beneath his fingertip:
"'After self-destruction, fragments of her heart-a perpetual motion engine of the second kind-have a certain probability of entering another person's body.'
"In other words, this boy's body now possesses some of the Perpetual Motion Engine's capabilities. His Noble Phantasm release speed is every bit as fast as Saber Alter's.
"One hundred and eighty seconds