Serah Farron is a fictional character from the Final Fantasy video game series, specifically introduced in Final Fantasy XIII. She is the younger sister of Lightning, the game's protagonist, and plays a significant role in the story. Serah is known for her kind-hearted nature and determination, often seeking to protect her loved ones. In Final Fantasy XIII-2, a sequel to the original game, Serah becomes a central character as she embarks on a quest to find her sister. Throughout her journey, she encounters various allies and adversaries, showcasing her growth and resilience in a world filled with challenges.