The final chapter of the Dai Shimin series follows the protagonist, Yamagata, as he enters his elderly years. After twenty-five years of serialization, the story concludes by shifting its focus entirely to the internal world of its aging creator and lead character. No longer navigating the urban economy or social pretenses, Yamagata now contemplates the simple yet profound questions of later life: what will he eat, and what will he talk about? The narrative urges readers to reexamine their own existence through the lens of his final reflections.

The main character, Yamagata, is now sixty-seven years old and has abandoned the dandy pretensions of his youth for the gritty realities of retirement and physical decline. The supporting cast from previous volumes, such as Satake and the former banker, are almost entirely absent, leaving Yamagata to carry the story through extended internal monologues. The setting is the mundane yet contemplative landscape of his daily walks, riverside bird-watching, and the quiet corners where he eats cheap soba and convenience store meals.

The narrative is structured as a series of personal essays on mortality, habit, and compromise. One notable arc details his switch to happoshu, a low-cost beer substitute, and his subsequent sixteen-kilogram weight loss. Another finds him reconciling with conveyor belt sushi, a culinary trend he once despised, as he now explains his practical reasons for supporting it. His discussions shift from urban theory to health tips, the aesthetics of cherry blossoms, and grumbling reflections on the samurai spirit. The final pages include a rare author photo and a candid discussion of his finances, bringing a documentary-like closure to the decades-long saga.

The volume is notable for its stripped-down format, consisting almost entirely of dialogue and text with minimal artwork. This approach has been interpreted as the author letting go of traditional manga conventions to speak directly to his long-time audience, focusing on the themes of ingenuity and effort that defined the series, even as critics note a sense of fatigue and repetition in the final monologues.