Cross-Dressing Villainess Cecilia Sylvie, Vol. 4 (light novel)

Lauded for her acts of bravery during Advent Day, Cecilia (still pretending to be Cecil) is invited to the seat of the Church of Caritade for an audience with the Holy Maiden herself! There, she seizes the opportunity to procure the sword that will allow her to rid the world of Obstructions for good...and ends up crossing paths with the game's major villain! To make matters worse, Oscar uncovers her true identity!