My Space-Time System - Chapter 549 The Arboreal Reaper, Verdigris.

Bai Yang is the youngest son of a rich family who grew up spoiled, unambitious and having no one expect anything from him. He doesn’t really mind this though, because he’s still able to live a simple and happy life.

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.

- Description from Novelupdates

After traveling to the Great Wilderness, Shen Can became the Ancestral Temple Keeper of the Blazing Flame Tribe due to his 'frail' body, responsible for the daily cleaning, offering incense, and routine sacrifices at the Clan Ancestral Temple..Shen Can fulfilled his duty as Ancestral Temple Keeper by using the 'Simurgh Blade' to pierce Wild Beasts' necks, extracting their blood to offer to the ancestors, only to discover that he could absorb their lifespan to deduce a cultivation method.

In 2040, The Earth was bathed in powerful radiation when a star went supernova, this radiation granted 50% of humans superhuman abilities but also created a nightmare for them as animals, insects, and carnivorous plants were mutated and became overpowered with intelligence, human started teetering on the brink of survival, a boy with no powers and no father, with a mother in a coma, seems destined for obscurity, but one night changed his life, with a new found hope to cure his mum from the everlasting sleep—Gene Elixir— he went on on a journey that would reshape his destiny...~Voracious Sovereign... Gene Devourer...Pray you won't be devoured by this power you wield which hunger is insatiable~~You call yourself an opportunist... But... you aren't free. A hungry man is not a free man...~