sesshouin kiara
Final boss of Fate/EXTRA CCC. Leads a Buddhist cult whose beliefs involve around rising to a higher plane of existence via sexual activity. Her Servant is Hans Christian Andersen.
Another version of her is the final boss of the Fate/Grand Order and Fate/EXTRA CCC crossover event as a Beast-class Servant; her playable version is under the Alter Ego designation.
Character Design: Wada Aruko
Voice Actress: Tanaka Rie