I traveled through hundreds of worlds at once

In a cave blocked by a huge rock on a hilltop in Tokyo Prefecture, a heavy breathing sound like the roar of a lion or tiger was heard, echoing in the deep cave.

There was silence within a few hundred meters of the cave, as if a giant dragon that could devour people lived in the cave. No animal or even insect dared to settle within a hundred meters of the cave.

Unconsciously, the sun in the sky gradually set, and the low breathing sound in the cave gradually subsided.

Suddenly, with a bang, the huge rock blocking the entrance of the cave, which served as a temporary gate, was kicked out, and a tall figure came out.