Kiara Sesshouin is a prominent character in the Fate/Grand Order universe, originating from the Fate/Extra CCC game. She is known for her dual roles as a serene Buddhist nun and a dangerously seductive antagonist. As a MoonCancer-class Servant, Kiara possesses both immense spiritual power and a complex, twisted philosophy that challenges the protagonist. Her character is central to several story events, embodying themes of desire and salvation, and serving as a memorable and formidable foe within the series.