"Emiya Shirou! Why can you summon Servants and take part in the Holy Grail War Chronicles!?"
"Why can you use Unlimited Blade Works to produce cartridges!?"
"Why do you get headaches all the time!?"
Looking at the bewildered Emiya Shirou, and Tohsaka Rin, who was shouting, "Stop it already!" as she tried to rush over and stop him, stood Kuroto, once Shinji Matou but now completely transformed into the Genius of God.
Laughing maniacally, ignoring those black-stockinged legs you could enjoy for a whole year, he continued shouting, "There is only one answer!"
"You're the first man in the world to be infected with the Bugster Virus! Hahahahahaha!"
Simply put, this is the story of a man who possesses the Genius of God.
After graduating from the world of Reincarnators and arriving in other worlds, he sets out to complete the ultimate game and create the legendary God Maximum Mighty X cartridge.
And so begins a series of experiments... and strange adventures.
