Aether Beasts - Chapter 12 - 12

At the age of eleven, the youth Ye Xuan's soul traveled through time to the distant Mythical Era, becoming an Undying monster emerging from the Emperor's Burial Ground, influencing one era after another. Yet behind Ye Xuan, an invisible force manipulated everything. Struggling to take control of his fate, Ye Xuan exhausted all means, but just as he was on the brink of success, he was betrayed by his disciple and wife, causing his soul to slumber for ninety thousand years.When Ye Xuan awoke, he found himself back in his own body and had become the son-in-law of the Emperor Immortal Sect, treated by others as a fool. The story begins from here.Eternal Emperor Soul, returned overnight.From then on, an emperor rose as a son-in-law, ushering in an invincible myth that dominated through the ages!Simplified version: The foolish son-in-law, soul returned, rose in one morning, invincible through all ages.Show-off version: “I am invincible; do as you please.” — Ye Xuan.Meme version: That year, my hands in my pockets, I knew no rivals.

The end of the beginning marks the beginning of a new era. Gods and demons were buried in the past, their history had crumbled into dust. As of now, twelve scriptures were passed down.

With the passage of time, during an excavation, a mysterious scroll of star map was unearthed at Egypt. As if carrying its mission, it abruptly appeared, yet abruptly disappeared. During its disappearance, a youth was brought along with it…

- Description from Novelupdates

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.

Following a brutal and tortured death, a former assassin, known only by his codename Kuro, is given the opportunity to reincarnate in another world, a world with magic and monsters. Armed with an unrivaled healing factor and an inhumane pain threshold, Kuro opts to go for a reckless direct approach in this world instead of a stealthy and cautious one, and as a result, slowly gains attention bit by bit.

Having previously been a loner in his old life, he interacts and befriends people for the first time in his existence, however, his blunt nature also sees him making just as many enemies, both big and small. By combining his old assassin skills with the magic powers of this world, along with his high resistance to pain and rapid regeneration, he doesn't take long to establish himself as a formidable force in this world.

Initially, Kuro only faces minor threats, like weaker monsters and bandits. But before too long, the threats slowly but surely become more and more severe…from Zombies to a bloodthirsty empire to Vampires and Demons, and even divine beings…however, as the enemies he faces grow stronger, so does Kuro, gaining rare powers that have never or rarely ever been seen in this world…