Dragon Ball: The Last Survivor

Fifteen years after escaping the destruction of Planet Vegeta as a child, Sage has lived in isolation on Earth, haunted by survivor's guilt and constantly training for the day Frieza's forces would find him. When he senses a familiar Saiyan energy signature, his trauma and paranoia lead him to attack blindly—inadvertently contributing to Goku's death during the battle with Raditz. Now faced with the devastating consequences of his mistake, Sage must overcome his guilt and help Earth's defenders prepare for the arrival of Vegeta and Nappa, while struggling to earn the trust of those whose greatest hero he helped destroy. As the last survivor who remembers the truth about Planet Vegeta's destruction, Sage holds crucial knowledge about the coming threat—but first, he must find the strength to forgive himself and become the protector his people's memory deserves