"You mean Moon Cell? The supercomputer stored on the moon?"
"How did you know?" This time, Shirou was the one who was shocked.
Shinji, who normally kept such a low profile, actually knew about the legendary lunar computer?
"That's a very old story. You know my uncle Kariya wrote a book, right? It was about the Holy Grail War, and you could even summon Servants." Shinji spoke excitedly to Shirou, words pouring out like water. "A few years ago, when I still hadn't gotten over my chuunibyou phase, I gathered information about this stuff everywhere. Then I found the lunar computer called Moon Cell online. It seemed to have something like the Holy Grail War from the book, but on a much larger scale, with a full one hundred and twenty-eight Servants. It sounded so exciting. It would be great if it really existed."
Shirou felt even more awkward as he looked at the excited Shinji. He couldn't exactly tell him outright that Moon Cell really did host such a Holy Grail War, and that his goal was to obtain access to that computer and calculate the result he desired, could he?
"Shirou, just tell me. The Holy Grail War isn't fake. It exists, doesn't it?"
Shinji asked with great seriousness.
"You... already knew?"
"Of course. The Saber you described, and that Golden Flash Servant—I saw almost identical people when I came to your house back then. I thought the Holy Grail War you and Uncle Kariya talked about couldn't be fictional. It had to be real. That was why it was so interesting, wasn't it?"
Shirou could only nod.
Sure enough, Shinji was just tsundere, not stupid. He had long since seen through the truth about all those people in Shirou's house.
"It's just that I don't seem to