The Days of Being the Richest Man in the Ninja World - Chapter 62. The Chubby Boy

This novel features: Bloodlines, multiple races, world-hopping, cultivation, magic, contracted beasts, kingdom-building, and brutal wars.Sollivan, a young man in his early twenties, miraculously survived the complete annihilation of his family—but at a terrible cost. Bound to a wheelchair, he is unable to live a normal life like his peers. Worse still, he lost all his cultivation, becoming nothing more than a powerless mortal in a world ruled by absolute strength.But fate had other plans...By sheer chance, he acquires a mysterious black book—one that grants him the ability to travel to another world, a realm governed by entirely different laws, where power is determined by strange bloodlines and overwhelming physical might. A world ruled by a superior race that looks down on weak humans.Trapped between two worlds, Sollivan finds himself entangled in sinister plots and terrifying secrets beyond human comprehension. Yet, the cunning young man who rose from the ruins of his tragic past sees this as an opportunity to reclaim his shattered destiny. As he pursues power and vengeance, he struggles to hold onto his humanity, which both worlds seem determined to strip away, forcing him to confront the fragility of his own soul.But can he manipulate both worlds to his advantage, or will his ambition lead him to ruin? In a reality where only the strongest survive…

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

Project BIOHUMAN was supposed to be a quiet project that tested to see if they could create superhuman beings. The Creator, Dr. Vang Chang created the Numbers, ten individuals who took the BIOHUMAN serum and came out different.

Countries caught wind of this and demanded the Creator to disperse the serum to strengthen the humans. The BIOHUMAN serum was shot into the sky and dispersed all over the world. Little did anyone know, it changed Earth and everything living on it. Plants, animals and humans were genetically changed forever.

25 years later, the Creator's son, Lee Seng Chang is a high school student without any Biohuman powers. The serum had given him almost no Dark Matter and only increased his overall human abilities to a super-Biohuman level. Even with that, the power standing only made him seen as the weakest amongst everyone.

Picked on because of his powerless status, Lee Seng was left by all of his friends and labeled powerless. He desperately tries to keep going with a smile on his face. Lee Seng one day gets an option from a man with a Fox mask.

“Awaken your power but at a huge price.”

Lee Seng takes the deal and watches as the world he knew quickly changes and isn't what it seems. Put under the pressures of his Father's status and his new profound power and changes, Lee Seng battles the demons within him and the unknown coming for him.