Eternal Thief - Chapter 14: Soul Cultivator!

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.

The Great Thousand World. It is a place where numerous planes intersect, a place where many clans live and a place where a group of lords assemble. The Heavenly Sovereigns appear one by one from the Lower Planes and they will all display a legend that others would desire as they pursue the road of being a ruler in this boundless world.

In the Endless Fire Territory that the Flame Emperor controls, thousands of fire blazes through the heavens.

Inside the Martial Realm, the power of the Martial Ancestor frightens the heaven and the earth.

At the West Heaven Temple, the might of the Emperor of a Hundred Battles is absolute.

In the Northern Desolate Hill, a place filled with thousands of graves, the Immortal Owner rules the world.

A boy from the Northern Spiritual Realm comes out, riding on a Nine Netherworld Bird, as he charges into the brilliant and diverse world. Just who can rule over their destiny of their path on becoming a Great Ruler? In the Great Thousand World, many strive to become a Great Ruler.

After Reincarnating into Naruto World at the Warring State Era as an Uzumaki, Masahiko thought that he got a useless System. He lived for 48 years as a normal, below average Uzumaki Shinobi.

That changed when he finally knew how the system works the day of his 49th Birthday!

- Description from Novelupdates