"What? Ilya is old man Kiritsugu's daughter?"
Upon hearing this explosive news, Shirou Emiya's eyes widened. Looking at the sweet, adorable Ilya, he swallowed and said,
"So that means you're my little sister..."
"Big sister."
Ilya shot Shirou Emiya a glare and corrected him.
Originally, she had been quite resistant toward Shirou Emiya. Even Xu Yue's presence had not changed that.
But when Shirou Emiya had stepped in to take a blade for Saber, it had struck directly at Ilya's soft spot. Being willing to give one's life to protect those important to oneself—that was what Ilya recognized.
In her eyes, even though she had seen Kiritsugu once a year over the past few years and their relationship had eased considerably, she still believed that Kiritsugu had betrayed her and her mother.
Clearly, for Kiritsugu, who only had one day each year to see Ilya, he would not waste that limited time explaining such matters.
It was only after Ilya saw Shirou Emiya's actions that the knot in her heart was truly untied.
"Though this reunion between siblings is quite touching, I still have to interrupt you."
Mage Killer cut in coldly.
"Everything you have been discussing assumes that the Black Grail has not yet overflowed."
"But in reality, having occupied the Mana Crystal Workshop, the Black Grail's growth rate will far exceed your expectations."
Hearing Mage Killer's words, Ilya, as the Holy Grail's vessel, spoke calmly and rationally.
"That won't happen. Even with a large number of mana crystals replenishing its mana, the Greater Holy Grail system fundamentally needs the holes opened when Heroic Spirits return in order to connect to the Root."
"The replenished mana can only stabilize and reinforce it. A Holy Grail that has merely devoured two or three Heroic Spirits does not yet have the