An Observation Log of My Fiancée Who Calls Herself a Villainess — An Observation Log of a Self-Proclaimed Villainess and First Feelings.
Heronia grows impatient with the fact that the situation isn't unfolding according to the proper scenario and her attitude toward Bertia worsens. Since the moment Cecil left to study abroad, the harassment that Bertia faces, presumably spurred by Heronia, escalates by the day.