After the events of the 62nd National High School Sensha-Dō Tournament, Koume finds herself in a difficult situation, having seen her best friend transfer to another school, and being the blame for the cause of the loss of Kuromorimine's 10th victory in that tournament. A lot of things happened to her after the incident which almost brought her to the breaking point. Her road to recovery was not a smooth ride, but what she endured during that time would be something she'd never forget.