Fujimaru Ritsuka is a young girl chosen to be a Master in the Chaldea organization, tasked with retrieving lost records and summoning heroic spirits to combat threats to humanity's existence. She possesses a brave spirit and a deep desire to protect those she cares about, often showing resilience in dire situations. Ritsuka is known for her kindness and willingness to understand her summoned Servants, forming strong bonds with them as they embark on their journey. With her unyielding determination, she stands at the forefront of battles, guiding her allies and discovering the truths behind the events that threaten their world.