Katana Maidens: Toji no Miko
Episode 8
S1 E8:
Kanami and the others arrive at Mokusa's headquarters and meet with Origami Yukari's younger sister, Akane. The girls learn the truth of the Great Disaster of Sagami Bay that occurred 20 years ago from her and Friedman. The truth of that day is vastly different from what the young Toji have been taught in school.