Ritsuka Fujimaru is the main protagonist in the anime series Fate/Grand Carnival, based on the game Fate/Grand Order. As a Master of Chaldea, Ritsuka is tasked with repairing the Human Order by traveling through different eras to resolve Singularities. Known for their determination and resourcefulness, they form bonds with numerous Heroic Spirits, or Servants, who assist in their quests. Throughout the series, Ritsuka adapts to various challenges, balancing leadership and empathy to rally their allies and overcome threats to humanity.