Sugai Yagura is an obscure novelist who has never found an audience. When he is diagnosed with a terminal illness and falls into despair, a woman who deeply admires his work enters his life. Inspired by her, he decides to keep writing. His condition worsens, and he runs out of money for treatment. He is offered a place in a cold-sleep experiment that covers all medical costs. After writing several novels for her, he enters hibernation without telling her, planning to dedicate the stories to her when he wakes.

He awakens in the year 2120. During his century of sleep, his unpublished manuscripts have been discovered and posthumously elevated him to the status of a national literary treasure. The world he returns to is one where generative AI is universally used for writing; composing a novel without AI is considered archaic or even impossible. Disoriented by his sudden fame, Sugai receives a letter from his girlfriend, who logically should have died decades ago. Tormented by the question of whether she is still alive, he resolves to write a new novel by hand, without any AI assistance, in the hope that it will make her happy again.

Sugai’s commitment to handcrafted storytelling brings him into conflict with a literary establishment that relies entirely on AI-generated content and AI-driven evaluation standards. His editor, Nielsen, supports him, but the publishing house pressures him to produce work that meets automated quality benchmarks. Sugai’s first AI‑free novel fails to impress the algorithms, and he struggles to find his footing in a society that has no use for human‑only creativity. As he decides to write a second novel, the pressure mounts. The story traces his isolation, his determination, and the emergence of a revolutionary technology that was born from a woman’s century‑spanning love—a technology that ultimately reshapes the literary world. Through four volumes, Sugai grapples with the question of what it means to create, to love, and to leave a mark in an era where machines have taken over the very act of telling stories.