The moment Naruto charged into the Supreme Heavenly Realm, white light swallowed him whole.
He couldn't see a thing. Light moved too fast here.
The rules of space were completely different from those of the lower realms. The speed of light was infinite.
The instant you opened your eyes, light came from every direction. There was no lag, no delay, no sense of distance.
Every ray of light you saw came from the edge of the universe, yet it took no time at all to reach your eyes.
Zero travel time and infinite speed meant you saw every corner of the world at once. It was terrifying.
Naruto closed his eyes and looked with Mind's Eye of the Kagura.
What his mind's eye showed him was clearer. The Supreme Heavenly Realm was a continent, a boundless continent.
He sent his divine sense out in one direction. Ten million li. A hundred million li. One light-year, ten light-years, a hundred light-years.
Even when his divine sense reached its limit, it still hadn't touched the continent's edge.
"This place..."
He looked up. Two orbs of light hung in the sky.
One was enormous, the other slightly smaller. They looked about the size of an ordinary sun and moon, but he knew that was an illusion. In a place like the Supreme Heavenly Realm, apparent size meant nothing.
He measured them with his mind's eye, and his Heavenly Heart suddenly tightened.
The "sun" was a hundred million light-years across. The "moon" was ten million. A sun a hundred million light-years wide hung overhead, yet it looked like an ordinary star. Why? Because it was so high that you could barely sense its presence. Its light covered the entire continent, but when you looked up, all you saw was a tiny point of light.