Ren Fujimoto, a man from Earth, dies tragically and finds himself reincarnated into the body of a young boy named Shiro Kazuki in a fantasy world where magic and martial arts reign supreme. Shiro's family—his mother, father, brother, and sister—were brutally slaughtered by the ruling elite for possessing a powerful artifact from another realm. With his dying breath, Shiro's father wished for vengeance upon their killers.
Now inhabiting Shiro's body and driven by the burning desire for revenge, Ren discovers the depth of the conspiracy behind his family's murder. The artifact they discovered was feared by the ruling powers, who sought to maintain their dominance. Ren, armed with the memories and determination of both himself and Shiro, embarks on a perilous journey to gain strength, influence, and allies.
Guided by the mysterious powers of the artifact and aided by newfound companions, Ren navigates through a world filled with political intrigue, powerful adversaries, and ancient secrets. Along the way, he forms alliances with formidable allies and gains the respect of influential figures who recognize his potential.
As Ren grows stronger and delves deeper into the mysteries surrounding the artifact, he wrestles with the moral implications of his quest for vengeance. Will he be consumed by darkness in his pursuit of retribution, or will he find a way to honor his family's memory while forging a new path towards justice and redemption?