Dawnless Sovereign - Chapter 109 (1): Emergence of Flame Demon

In the Wasteland Era, four grand circular walls separates the world of humans from the Exotic Species, which people also refer to as the Apocalypse Circular.Lu Luo has unexpectedly arrived in this world and, feeling somewhat helpless amidst the sudden crisis, has seen this prompt in his vision:[You are so weak it's suffocating, Although you have awakened Grade S-02-Devourer and Grade S-04-Fusioner, it's actually pretty useless.The only thing that can truly help you escape this crisis and lead you to the pinnacle of life is Sequence S-11-Observer.][The above evaluation comes from the noble Grade S Sequence-11: Observer's fair analysis.]Lu Luo: “? This evaluation, so fair huh!”

In the 5th year of Konoha’s founding.The battle between Hashirama Senju and Madara Uchiha at the Valley of the End had come to a close.In order to treat his elder brother’s injuries, Tobirama Senju resurrected a medical ninja from ancient times, hoping that this individual could prevent the injuries from shortening his brother’s lifespan.This medical ninja’s name was Emiya Shigen.

Back in 1991, in the face of this golden age, Chen Jianghai swears that he will only live in three words in this life: Lin Wanqiu! The story of a reborn person who built an electrical empire and reached the pinnacle of his life!

- Description from novelbuddy

This world has Fox Fairies, River Gods, Water Monsters, Great Demons and Cultivators who seek immortality.