With her newfound "programming," Reimu set out on a path, the details of which were unclear even to her. Her mission, shrouded in mystery, was to fulfill a prophecy, one that would change the course of history.

"Welcome, Reimu," the woman said, her voice echoing in Reimu's mind. "You have been chosen for a special purpose, one that requires a mind as pure and strong as yours."

The once vibrant and independent spirit of Reimu was now clouded, her actions controlled by a force beyond her control. "Kei, Kei, Kei," a voice echoed in her mind, a mantra that repeated, symbolizing her new, imposed identity.