"This is Japan. The home of many Kamen Riders, including myself and Kitaoka. What's happened is..unknown. This reality, has considerably wiped out it's population. Perhaps the world. I'm uncertain. But events like these..I've heard having alternate effects should certain things go unchecked."

Remembering the Global Freeze, specifically.

"Global Freeze. Zero Day. Daybreak. They're all events logged that took our world by storm. ..This world is perhaps victim of a similar phenomena."