Doppo Kunikida

Alongside working in the Agency, Kunikida previously worked as a cram school teacher for maths, working part-time on the weekends before turning 20. He paired this with college studies, but later dropped out to dedicate full-time to the Agency. Some point afterward, Kunikida focused on a terrorist known as the Azure King. Although working alongside authorities, miscommunication ultimately ended in multiple detectives' deaths, including Rokuzo Taguchi's father. Due to his guilt, Kunikida took up trying to support Rokuzo later in life, but both suffered from a strained relationship, with Rokuzo wanting little to nothing to do with Kunikida. At some point, Kunikida handled a case involving a high school student setting bombs up on school grounds. He attempted to talk the boy out of this terrorist mindset, but later learns he failed. During Osamu Dazai's entry into the Agency, Kunikida's tasked with deciding whether or not Dazai is meant for the Agency. Yukichi Fukuzawa orders him to kill Dazai if Kunikida determines Dazai is a danger. An order that, despite Kunikida's faith in Fukuzawa, begins to shake Kunikida's faith in his ideals. The two work on a serial kidnappings case, and Kunikida enlists Rokuzo's technological skill to find solid leads. Kunikida and Dazai later rescue Nobuko Sasaki from drowning in a tank. Unfortunately, several other kidnapped victims, locked in a gas chamber, perish. Security cameras recording the incident were leaked, an image of Kunikida failing to save the victims published in the newspaper. This further strains Kunikida's ideals, however he presses on, hoping Sasaki's ordeal and further leads will finally lead them to the true Azure Messenger. Unbeknownst to Kunikida, Dazai later has Rokuzo look into Sasaki's claims, leading himself and Kunikida to an abandoned building. When Rokuzo arrives, Kunikida denies the thought of him the Azure Messenger, which Dazai confirms, however, before either he or Rokuzo can clarify the situation, Sasaki appears, shooting and killing the boy. Sasaki confesses to the kidnappings and murders being her doing. She tells Kunikida she and the Azure King were lovers, and now she takes his place to follow through with his ideals, but with this confrontation, she's tired of killing and living altogether, unable to reach those ideals in the first place. Before Kunikida can react, Rokuzo shoots and kills her. Rokuzo and Sasaki's deaths greatly impacted Kunikida and his view of his ideals. Although he remains true to them, he is constantly haunted by the deaths of those he cannot save, a weight that remains heavy on his shoulders.