Devil Slave (Satan system) - Chapter 1068: It All Began With Blood

In a post-apocalyptic fantasy world layered into multiple realms, humanity faces extinction due to their endangerment of the main realm. Forced to merge all realms back into one, a deity grants humans a leveling system to empower them, lest they become extinct when facing the mythical creatures. Noah, our protagonist, embraces the role of a monster tamer, trading his humanity for strength and eventually transforming into a monster himself. As Noah struggles with his evolving identity, he must navigate a world where the line between human and monster becomes increasingly blurred.

"There is a thin line between poison and medicine, and I shall make you dance on it!"

The scum’s or villain’s long road of transformation was tentatively set to the world:
The abandonment of the educated youth’s wife (Completed)
The hidden marriage of the scum film emperor (Completed)
The best brother in the world (Completed)
The Phoenix male who destroy the bridge after crossing the river (Completed)
The treasonous general (Completed)
I’m an honest man (Completed)
To become the top scorer in the School of Agriculture (Completed)
The soft rice man’s self-cultivation (Completed)
The whole world is reborn (Completed)
I want to survive on a desert island (Completed)
The stallion male who has seized the opportunity (Completed)
The perverted self-salvation (Completed)
The spring of the loafer (Completed)
The misplaced life (Completed)
The miser career (Completed)
The ghost is out of feeling (Completed)
The Queen’s favorite husband (Completed)
The vicious girl with her godfather (Completed)
I want to be a good person (Completed)
I does not tear up the family (Completed)
The perverted common plant (Completed)
The Mary Sue’s men (Completed)
Every time I was reborn, someone wants to kill me (Completed)
The old people’s counterattack path (Completed)
The global evolution (Completed)
When I became a net red (Completed)
For you, good person (Completed)
His heart had white moonlight (Completed)

- Description from Novelupdates

Kaka: Huang Kai was the greatest hero of the Istanbul night, although he played only a little.Ancelotti: Huang Kai is a super genius, it's just too bad his body isn’t quite up to par.Maldini: Huang Kai is the most important player on the team. I suggest the club re-sign him for another five years.Barcelona: To sign Huang Kaiwen, we decided to demonstrate our sincerity by signing his cousin with an annual salary of one million euros. The veterinarians in Milan are no good; he won't get injured with us in Barcelona.Bayern Munich: We have the Divine Doctor!Huang Kaiwen, the biggest slacker in soccer.From slacking off every day, forced to make sporadic appearances, he ultimately was forced to become the team's savior.Football, anything is possible!