The Villainess Should Just Be Forgotten (S01E09)

Aileen and her companions manage to sneak into a black market auction where demon incense is being sold. While attempting to slip into the host's chamber, she encounters the sorcerer Elephas Levi. The ultimate antagonist from the Regalia of Saints, Demons, and Maidens fan disk expresses a desire to speak with Claude, hoping to persuade him to change his stance towards the Levi family. That night, Aileen is shocked to learn that Claude has been stabbed in the stomach by an unknown assailant!