Naruto: The Life Changer - Chapter 55 -:

After the brutal loss of his beloved grandfather, Liam Hunter embarks on a harrowing journey into the heart of the Dark Forest, known as the Forest of Kyrell, with a singular goal: to gain the strength necessary to honor his grandfather’s memory and to never lose anyone dear to him again. At just ten years old, Liam is thrust into a world of darkness and malevolence, where he endures four grueling years of training and transformation. In this shadowy realm, he is reborn as a fierce warrior, driven by a relentless desire to eradicate every demon and ultimately confront the Demon King, Emrys himself. To achieve his formidable goal, Liam must forsake any emotional connections that could weaken his resolve. The once vibrant and joyful boy is transformed by his trials into a cold and unfeeling combatant, hardened by the harsh realities of his quest. This is the story of Liam Hunter—the last wielder of dark magic—whose journey through darkness and sacrifice will shape him into a force of vengeance and resolve.

Kaiden Tian’s aspirations of basketball stardom take a heartbreaking turn when a car accident not only claims his mother’s life but also robs him of his ability to walk. Undiscouraged, he settles for a role as the waterboy of a top high school basketball team, determined to stay close to the game he loves. However, he meets an untimely death and finds himself inhabiting the body of Kai Guo, a notorious troublemaker blessed with an ideal physical form. [Welcome to the Rise to Legend System!] With this second chance at life, Kaiden sees an opportunity to rewrite his destiny and fulfill the dreams that were once shattered.

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

I lived for you in the last lifetime, everything I did was for you, yet you wanted me to die; so, this time, life is mine to live! This world lied to me, betrayed me, and humiliated me, and I am back to change everything!

- Description from Novelupdates