Shiro, a young man from Genkai—in a not so peaceful mortal realm, living near dragon-infested northern mountains—saw his world crumble when his family, friends, and hometown were destroyed by monstrous dragons. As one of the few survivors, he was rescued by the Artemis Familia and taken to safety. After a week in a coma, Shiro awakens to a startling revelation: he was once Kaizen Santos, a 23-year-old college student who died in his sleep due to heart failure. However, his existence is far from ordinary. He was reincarnated in the world of *Tensura: That Time I Got Reincarnated As A Slime*, only to suffer under the mad Divine Ancestor, Twilight Valentine, who tormented his soul through his experiments and scattered its fragments across infinity. Now, one of Kaizen Santos's scattered soul fragments found itself reincarnated once more, this time in the world of *Danmachi: Is It Wrong to Pick Up Girls in a Dungeon?* Struggling with the fragments of his past identities and the memories of his previous torment, Shiro must navigate the complexities of Orario’s Dungeon and forge new connections. As he adapts to his new life, he must uncover the hidden links between his fragmented souls and the destiny that binds them across different realms. His quest will challenge his resolve and reveal the mysteries of his past and future.