"But aren't Noble Phantasms forbidden? Don't tell me you can actually create Pseudo Noble Phantasms on the spot?" Da Vinci was very curious about Shirou's technique. If that were the case...
"Not really. I can't make Pseudo Noble Phantasms. I can only project counterfeit Noble Phantasms. What do you think? Looks like you're tempted. Noble Phantasms are indeed forbidden, but that only matters if someone notices. If I don't release its True Name, no one will notice. And I can still bring out a Noble Phantasm's full power without releasing its True Name. That is, Phantasmal Collapse."
The principle behind Phantasmal Collapse was simple. Every Servant could do it, because it was simply self-destructing a Noble Phantasm. Anyone could make one explode, but when it came to whose explosion worked best, naturally—it was Shirou's Noble Phantasms!
Because others would be heartbroken over blowing theirs up, while Shirou would not.
His Noble Phantasms cost no money, only mana.
"Oh?" Da Vinci seemed to be considering whether this was worth it. But if it only cost mana, then even failure would mean no loss. And if Shirou really blew up a big catch, they would make a killing.
The radar showed that there really was a large fish beneath the seabed. It was nearby and had barely moved. But without a powerful means of attack, they would have no chance of claiming that fish's kill.
"Then, since I'm providing the mana, I get sixty percent and you get forty."
A smile curled at Shirou's lips. It seemed the deal had been struck, but since it had, he got to call the shots. After all, he was no longer the one asking for help.
"No. It should be seventy-thirty. I get seventy, you get thirty."
Shirou poured himself a glass of water.
"Pleasure