Akame ga Kill: Starting with Dual Kamui - Chapter 39: Seiga Cave

In this world, Planet Earth had undergone great changes and humanity is faced with extreme danger. Luckily, humans have something called the Heaven Dao software.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

The story follows an old Cultivator who transcended from the Earth to the realm of cultivation. After nearly a hundred year of farming, he found himself disheartened by his own talent and decided to return to his mortal clan to pass on his final legacy before his death. However, to his surprise, his true new beginning awaited him there.This is a tale of family growth—there is no structured system, and the protagonist nurtures his family because he needs them to cultivate his treasure. The novel is truly unique, and I promise you all an exciting journey. Enjoy, my friends!-----------------------------------------------------------------------------------Cultivation RealmsMortals:Body Tempering (Four Stages): Skin Tempering, Blood Tempering, Bone Tempering, Organ Tempering.Immortal Realms:Level 1-9 Each major realm is divided into: Early Stage, Mid Stage, Late Stage, and Peak.

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.

A poor little kid walks out from a remote mountain area while holding the Nine Dragons and the Incredible Cauldron. With a control over the time and space eternally, he embarks on the Path to God where he defies the odds of the boundless universe gaudily by fighting against royalty and clashing with the legendary generation.

- Description from Novelupdates