Added: May 9, 2014
As the culture festival begins, Chitaru mentions to Hitsugi about how she is searching for a killer known as Angel's Trumpet who specializes in poison, to which Hitsugi offers to help her out. Later that night, Hitsugi comes across Shiena Kenmochi, who was planning to deliver a warning to Haru, and sprays her with poison before delivering her own warning to Haru when she and Tokaku comes across the scene. The next day, as Shiena is transferred out of Class Black due to her hospitalization, the play gets underway, with Tokaku and Haru discovering many of the prop swords have been covered in poison. Spotting this, Chitaru suspects that Haru is Angel's Trumpet, the one who killed her teacher's daughter, and faces against Tokaku in an off-stage sword fight. During the battle, Hitsugi comes forward and confesses that she herself is Angel's Trumpet. Returning to the play, Hitsugi allows herself to be stabbed by Chitaru, who then learns from Nio that her wish was to leave with her once everything was over. Feeling remorse, Chitaru drinks the remainder of Hitsugi's poison and falls alongside her, with the audience unaware.