The World's most Overpowered Side-Character - Chapter 413: Undefeatable.

Synopsis: Yang Chen, the inheritor of the divine throne of Hades, was separated from his family at a young age and sold to a foreign assassin organization. Enduring the darkest of worlds, he eventually returned to his homeland incognito. Intending to live a low-profile life as a street vendor selling lamb skewers, fate took an unexpected turn when he married a well-known local corporate CEO. Hoping for a quiet existence, he found himself drawn into the role of a guardian knight due to the presence of beautiful women from various walks of life. As he navigates through these connections, his past experiences and former comrades resurface. Inadvertently, he delves into the world of cultivation in China and uncovers the essence of this world.

Lin Rui was reborn, reborn in the year 4161, two thousand years later. In this era of highly advanced technology, where the peak of human biotechnology had collided and fused with the culture of Tianji Star, a new path for human evolution was born—’Zhi Zhuang Wudao’, capable of granting eternal life and transcendence beyond the universe. The entire society esteemed the strong, and it was considered an honor to practice Zhi Zhuang Wudao. There was even a group of ’Variant Walkers’ who stood at the pinnacle of the social pyramid, looming over the world with arrogance. At first, Lin Rui couldn’t fathom the meaning of his rebirth. He merely adapted to this era out of a sense of responsibility. It wasn’t until one day that the ’Battle Spirit Ring’, which had come into existence alongside Lin Rui, captured its first Battle Spirit. Lin Rui could let the Battle Spirit possess him for combat, and could also copy all the martial skills and abilities mastered by the Battle Spirit. The Battle Spirits he captured grew increasingly powerful— Lin Rui began to realize this era was his to own. A ’Super Abyssal’, who would overshadow the future, began his rapid development journey at the Tianji Star’s ninth base.

She had never expected that she would slept with her deadly enemy,but it turned out to be a good match for both of them.

while after marriage ,his indifference finally angered her.

You damn bastard!

Elias “Grim” Kingsley, a nine-year-old orphan with a hardened heart and sharp tongue, dies alone from pneumonia in an overcrowded orphanage. Known for his perpetual scowl and biting remarks, he's labeled a “problem child” by caretakers and “damaged goods” by potential adopters. Years of rejection have built thick armor around his young heart.In death, he encounters the God of Balance who offers him a second chance at life in a different world—this time as Grim Van Ambrose, son of a noble house. Balance explains that every soul deserves to know love and connection, something Elias was cruelly denied in his first life.Promised the family and belonging he never experienced, Grim begins his new life only to suffer an immediate tragedy: his mother dies moments after his birth. This cruel twist of fate reinforces his belief that loss is inevitable, leaving him with a distant father and the mysterious voice of a “Guidance Assistant” in his head.As Grim grows into his new identity, he struggles with his dual nature—the emotional scars of his past life bleeding into his present one. His difficult personality and sharp tongue remain, now paired with noble privilege and expectations. Despite his outward brashness, he carries the deep wounds of his first life and the fresh loss that welcomed him into his second.What begins as one orphan's second chance evolves into an epic journey through a world of ancient beasts, elemental magic, and deadly political intrigue. As Grim uncovers the truth about the Ambrose Clan's fall from grace and the conspiracy that framed them for treason, he faces increasingly dangerous adversaries—both human and monstrous. His quest for revenge against those who destroyed his family's legacy will challenge him to master forbidden techniques, forge unexpected alliances, and ultimately decide whether to rebuild the Ambrose Clan as it was, or transform it into something entirely new.In a realm where power determines survival and ancient secrets lurk beneath noble facades, Grim must learn that sometimes the greatest battles aren't fought with swords, but with the choices that define who we truly are.