"Saladin no Hi" is a historical manga set during the Third Crusade, focusing on the conflict between the Muslim leader Saladin and the Christian forces led by Richard the Lionheart. The narrative explores the political, cultural, and religious tensions of the era, emphasizing the complexities of war and diplomacy. The story begins with the fall of Jerusalem to Saladin's forces, a pivotal event that sets the stage for the ensuing struggle. Saladin, portrayed as a wise and compassionate leader, seeks to unite the Muslim world while grappling with the moral weight of his decisions. His counterpart, Richard the Lionheart, is depicted as a formidable warrior driven by ambition and a sense of divine mission, yet also burdened by the challenges of leading a fractured coalition.

The manga delves into the perspectives of both sides, highlighting the human cost of war and the shared humanity of its participants. Key figures such as Balian of Ibelin, a Christian knight who negotiates with Saladin, and Al-Adil, Saladin's trusted brother, play significant roles in the unfolding events. The narrative also incorporates lesser-known historical figures and fictional characters to provide a broader view of the era. Battles, sieges, and political intrigue are central to the plot, with detailed depictions of military strategy and the shifting alliances that characterize the Crusades. Themes of honor, faith, and the futility of conflict are woven throughout the story, offering a nuanced portrayal of a turbulent period in history. The manga balances action with introspection, presenting a multifaceted exploration of the Crusades and the individuals who shaped their course.