The narration frames the series through the perspectives of its two protagonists as they share stories. Set in the Sengoku era, the narrative unfolds through the protagonists reminiscing about past exploits over moonlit sake. These conversations transition into flashbacks depicting their earlier adventures and battles.

The narration alternates between the protagonists, providing insights into their backgrounds, motivations, and the evolution of their friendship. It contextualizes their experiences during the Warring States period, including their initial meeting, collaborative conflicts, and individual paths as warriors. The structure emphasizes their recollections of formative events that shaped their legendary status, highlighting themes of loyalty, justice, and philosophical ideals.

Throughout the series, the narration maintains a retrospective tone, bridging past and present timelines. It explicitly references their younger days, detailing their growth from initial encounters to becoming renowned figures. This storytelling approach reinforces their bond and shared history, explicitly framing each episode as a recounted memory.