In Different World with Naruto System (WN) - Chapter 228: 3 years later

Longevity Celestial Dynasty, Nine Years of Destiny.

China is in chaos, and the people are struggling to live.

The imperial rule collapsed, and the Western barbarians attacked with the religion of the gods.

The new warlords are everywhere, and they are divided into one side.

Natural disasters such as floods and droughts, the overturning of the earth dragon, the sandstorm tornado, the acid rain, the red moon, and the falling of meteorites have come one after another.

There are also countless monsters running rampant, strange clusters, ghosts and ghosts, indescribable monsters, or mysterious phenomena that cannot be understood.

In this dark and chaotic world, Tao Qian opened his eyes and found himself a prisoner who was about to be beheaded in Caishikou…!

- Description from novelbuddy

The protagonist is an accidental time traveler - he didn't wait, didn't guess, only dreamed, but ended up in history, which he didn't pay much attention to. He was just lucky with his lineage.Ryo is a new member of the Nara clan, from the Uzumaki lineage on his father's side, and it so happened that he was born not at the beginning of the known plot, but more than three decades and two world wars later. Now he has to figure out how to get out of this situation however he can.

“I'm going out to do something, so I can't take care of you any more. You can go down the mountain and have fun. But if you can't find someone who matches your Innate Pure Yang Body in three years, you're finished!”These were the last words the old man, who was Lionel Yeager's teacher, threw to him before he vanished. Meanwhile, having mastered most of his master's skills, Lionel Yeager went down the mountain and took his first step into civilization for the first time in years.With his unparalleled medical and martial arts, he sets forth on a journey, befriending new allies and crushing all the enemies that stand in his way, as he attempts to resolve his Pure Innate Yang Body constitution, and cultivate to the top of the world!

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.