Chrome Shelled Regios - Volume 20, Mortal Technica

A teenager who obtained a life simulator, with the help of the life simulator, went from an inexperienced martial artist to the peak of cultivation, seeking immortals and chasing gods, paving the way for all living beings, and eventually becoming a generation of Taoist ancestors. [Avenue is fifty, Tianyan is forty-nine, escape to one of them! Therefore, everything in the world has a chance of life! ]

Sixteen years old: You broke through the ninth-rank martial artist, in order to deter all the enemies with ulterior motives.

Two hundred years old: You broke the bondage of heaven and earth, opened the body of the gods, and witnessed the way of immortals.

Three hundred years old: You realize the nature of heaven and earth, and prove the way of heaven and immortals.

Seven hundred and eighty-six years old: You have five proofs of the immortal way, one step to the sky, and the position of the monarch.

…

After countless simulations, [You have opened up an immortal path for all sentient beings and are respected as the Taoist ancestor. ]

- Description from novelbuddy

“An Ice Dragon with a legendary bloodline? Yeah… I tamed it.”Killed in an explosive lab accident, Liu Feng thought his story had ended. But fate had other plans. Reborn in a world where magic reigns and beasts dominate the wilds, science is no longer his weapon —magic is.[DING! You have been reincarnated!][DING! You have received a Talent!][Talent: Eye of the Beast King][Rank: SSS][Abilities: Speak to beasts. Control without bonds. See into their souls. Heal their wounds. Break their will]Gifted with one of the rarest talents in the realm, Liu Feng —now reborn as Aiden Aswald— seemed destined for greatness.But with power came a price: a cruel curse of immortality, one that chained him to an eternity of pain.At twelve, Aiden regained the memories of his past life —and with them, unlocked his beast-controlling powers.His first tamed creature? A terrifying Ice Dragon with a legendary bloodline, feared even among apex predators.Taming it should've been impossible. Surviving it? Even more so.But that was just the beginning.Now, Aiden walks a perilous path, forging bonds with magical beasts while uncovering the truth behind his curse. To break it, he must seek out the Essence of the Chronos Fire Dragon Beast.In a world where beasts rule, contracts are sacred, and survival is earned fang by fang... will Aiden rise as king —or fall as prey?

Long ago a great calamity struck the earth, destroying much of it and merging what remained with pieces of other worlds.

With these worlds came Aether, a new form of energy that can allow one to transcend the bounds of normal mortality and human limitations.

In a world where humans absorb the essence of aether beasts to gain power, Aiden Hawke joins the class of humans known as arcanists, people who defeat aether beasts and absorb their essence into cores they forge within themselves, and who infuse themselves with the aether that permeates the world around them to increase the power of their body and mind.

However, unlike most, Aiden will find that he holds a unique gift and that his journey as an arcanist will not be so simple.