"Fate/Grand Order: Turas Réalta" is a manga adaptation of the popular mobile game "Fate/Grand Order," specifically focusing on the "Turas Réalta" story arc. The narrative is set in a world where humanity's survival is threatened by the incineration of human history, orchestrated by the enigmatic King Solomon. To prevent this catastrophe, the organization Chaldea employs Master candidates and Servants—heroic spirits summoned from across time and space—to rectify the anomalies in history known as Singularities.

The protagonist, Ritsuka Fujimaru, is a young Master tasked with leading these missions. Accompanied by Mash Kyrielight, a Demi-Servant and loyal companion, Ritsuka travels through various Singularities to restore human history. Each Singularity represents a distorted timeline where historical events have been altered, often due to the interference of powerful Servants or external forces. The duo encounters a wide array of historical and mythical figures, ranging from legendary heroes to infamous villains, each with their own motivations and conflicts.

The "Turas Réalta" arc specifically delves into the Celtic mythology-inspired Singularity, where Ritsuka and Mash face the forces of the Queen of Shadows, Medb, and her ally, the warrior Cú Chulainn Alter. The story explores themes of loyalty, sacrifice, and the clash between ideals as the protagonists navigate a war-torn landscape filled with rival factions and treacherous alliances. The arc also introduces new Servants, such as the enigmatic Avenger-class Servant Edmond Dantès, who plays a pivotal role in the unfolding events.

Throughout the manga, the narrative balances action-packed battles with moments of introspection, delving into the personal struggles and growth of both Ritsuka and Mash. The dynamic between the two protagonists is central to the story, highlighting their evolving bond and shared determination to protect humanity. The manga stays faithful to the source material while expanding on character interactions and emotional depth, offering a compelling adaptation for fans of the "Fate" series.