Naruto: The Outsider's Resolve - Chapter 8.43 (30)

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

Ruins stretched across the landscape in the apocalypse after the nuclear war.

Adventures of a reincarnated Old Man who died saving a kid who was about to get hit by a Truck. Reborn as the son of Duke DragonHeart, AshBorn being a unique individual with Dragonblood and elf blood in his veins he spends his childhood training with dragons and spirits of the world tree goes out into the world to adventure and climb the tower, traveling to different planets,learning the secrets of the universe as he fights an evil unknown enemy, in a perfect way of course

The once most powerful ancient forbidden divine art, the Ancient Dragon Elephant Technique has been lost for millions upon millions of years.Countless years later, youth Lin Feng who was down on his luck, managed to obtain the number one ancient forbidden divine art, the Ancient Dragon Elephant Technique by chance.When Lin Feng departed from a tiny city of the northern-most area in the world, a legendary story would begin.This is a world with experts as many as the trees in a forest, a world where different races vyes for supremacy.Who shall rule over destiny in this boundlessly vast land?Depending on the Ancient Dragon Elephant Technique, Lin Feng battle the heavens and fought the earth, sweeping aside all experts with dominance, tyrannically ruling the myriad realms.