"A Story of Seven Lives" is a manga series that intertwines the lives of seven individuals, each grappling with their own struggles, yet connected by a mysterious and supernatural thread. The narrative unfolds in a contemporary urban setting, where the characters' paths cross in unexpected ways, revealing a deeper, shared destiny.

The central premise revolves around a celestial event that occurs once every century, during which seven souls are chosen to bear the weight of a cosmic balance. These individuals, unaware of their roles initially, begin to experience strange phenomena and vivid dreams that hint at their intertwined fates. The story delves into their personal lives, exploring themes of identity, purpose, and the human condition.

The main characters include a disillusioned artist, a struggling single mother, a reclusive scientist, a high school student with a troubled past, a retired detective, a young entrepreneur, and a wandering musician. Each character's backstory is meticulously crafted, providing depth and context to their actions and decisions throughout the series.

As the celestial event approaches, the characters are drawn together by a series of cryptic messages and encounters with enigmatic figures who seem to know more about their destinies than they do. These figures, known as the "Keepers," serve as guides and antagonists, pushing the characters to confront their deepest fears and unresolved issues.

The plot thickens as the characters discover that their lives are not only interconnected but also pivotal to the survival of their world. They must navigate a labyrinth of challenges, both external and internal, to fulfill their roles in the cosmic balance. The narrative is punctuated by moments of intense drama, emotional revelations, and philosophical musings on the nature of existence and the interconnectedness of all life.

Throughout the series, the characters' journeys are marked by growth, sacrifice, and the forging of unlikely alliances. The story culminates in a climactic confrontation where the seven must make profound choices that will determine the fate of their world and their own souls. The resolution is both poignant and thought-provoking, leaving readers with a sense of closure and contemplation.