Naruto: Escape From Konoha - Chapter 197: 193: Kakashi, Not a Spy

After transmigrating into a beast world, Rong Mingshi discovered that the people of this world experienced widespread mania. For example, when their emotions were abnormally agitated, they would become destructive beasts. If their emotions were abnormally low, they would shrink into their young beast form.

When a glorious old civilization was toppled overnight, a strange purple moon rose and thus began the Purple Moon Era.

In the year 1368, at the end of July, deep crimson shall descend from the heavens.

- Description from Novelupdates

“My name is Zeon, and my weapon is the entire desert.”

The Earth underwent terraforming. As a result, the oceans evaporated, and the land transformed into sand.

On the desertified Earth, Zeon became the sole Sand Mage.

The world named him the Sand Ghost.