"Kieli" is a manga series set in a dystopian, war-torn world where the remnants of a once-thriving civilization are overshadowed by the lingering effects of a devastating conflict. The story centers on Kieli, a young girl who possesses the ability to see and communicate with spirits, a trait that isolates her from others. Her life takes a dramatic turn when she encounters Harvey, a seemingly apathetic and immortal soldier who fought in the war centuries ago. Harvey is cursed with eternal life, his body sustained by a mysterious "corpse," and he carries the weight of his past as a reluctant participant in the war.

The narrative unfolds as Kieli and Harvey embark on a journey across a desolate landscape, traveling by train and encountering various remnants of the war, including abandoned cities and forgotten technologies. Their journey is driven by a shared mission to uncover the truth behind the war and its lingering consequences, as well as to confront the unresolved traumas of their pasts. Along the way, they are joined by the spirit of a deceased soldier named Corporal, who resides in a radio and serves as a guide and companion.

Themes of loss, redemption, and the search for meaning are woven throughout the story. Kieli's innocence and determination contrast with Harvey's cynicism and detachment, creating a dynamic relationship that evolves as they face challenges together. The series explores the impact of war on individuals and society, delving into the emotional scars left on both the living and the dead. The interplay between the human and spiritual worlds is a recurring element, highlighting the fragility of life and the persistence of memory.

The manga balances moments of introspection with action and mystery, as the characters encounter hostile forces, uncover hidden truths, and grapple with their own identities. The world-building is rich, with a focus on the interplay between technology and spirituality, as well as the consequences of humanity's hubris. The characters' personal journeys are central to the narrative, with each revelation and confrontation adding depth to their development.

"Kieli" is a poignant exploration of resilience and connection in a fractured world, blending elements of science fiction, fantasy, and drama. Its narrative is driven by the interplay of its characters and the haunting atmosphere of its setting, offering a compelling and emotionally resonant story.