I Created an Persona Tape in the Moon World

Tia transmigrated to Fuyuki City and became a red-haired boy. He originally thought he was just an ordinary person, but to his surprise, at the age of 7 during the Fourth Holy Grail War, he met Waver and learned that he actually had a magic circuit—and even accidentally awakened his Origin.

Tia never would have imagined that his Origin was actually sword! He turned out to be Shirou Emiya before the Great Fire of Fuyuki!

What shocked Tia even more was that his father and mother's Origins were Compassion and Return, respectively!

What the hell is going on here?! Is this really the Fourth Holy Grail War I know? This is way too absurd!