How a Realist Hero Rebuilt the Kingdom S01 E25 Know Your Enemy and Know Yourself, and Your Union Shall Not Be Endangered

One evening, Excel whispers to the fiancées Liscia, Aisha, Juna, and Roroa that she will teach them how to please their man, and suddenly commences a "Fiancées' Bridal Course". The secrets of Souma and his fiancées are about to come to light.