Ango Sakaguchi serves as a government operative within the Japanese Ministry of Internal Affairs’ Special Abilities Division, specializing in cases involving individuals with supernatural talents. His ability, *Discourse on Decadence*, allows him to extract memories and information from objects or locations through physical contact, a tool he employs extensively for intelligence operations. Under government orders, he infiltrated the Port Mafia as a spy before being tasked by mafia leader Mori Ougai to penetrate the militant group Mimic, rendering him a triple agent. This dual deception played a pivotal role in the *Dark Era* incident, where his covert actions eroded his friendships with Osamu Dazai and Oda Sakunosuke. Ango’s strategic negotiation of a truce between the Port Mafia and the government to eradicate Mimic inadvertently caused Oda’s death, permanently severing his ties to Dazai. Tall and slender, Ango sports short dark hair, circular glasses, and a mole above his lip. His wardrobe—a pale brown double-breasted coat, matching trousers, and a kobicha-colored tie—mirrors his bureaucratic persona. Post-*Dark Era*, Ango emerges as a pragmatist burdened by ethical ambiguity. During the *Guild Arc*, he begrudgingly allies with Dazai to neutralize threats, their collaboration marred by unresolved animosity. A staged car crash engineered by Dazai leaves Ango gravely wounded, underscoring their fractured dynamic. Nevertheless, he aids the Armed Detective Agency by securing Kyoka Izumi’s rescue through governmental channels. In subsequent conflicts, his loyalty to the government clashes with mounting dissent against Chief Taneda’s utilitarian policies, which endorse sacrificing individuals for societal stability. Ango publicly condemns this philosophy, rejecting the commodification of human lives. His strategic influence grows during clashes with groups like the Decay of the Angel, where he covertly assists Dazai by decrypting communications, manipulating Meursault Prison’s surveillance, and guiding Atsushi Nakajima’s team to evade capture—actions demonstrating tactical ingenuity and a willingness to bypass official protocols. Personal quirks, such as favoring unagi over sea cucumbers and a childhood speech impediment, add nuance to his reserved demeanor. Though his evolution from bureaucratic agent to ethically conflicted operative is marked by stoicism, glimpses of vulnerability surface—such as visible distress upon uncovering the Decay of the Angel’s schemes—revealing his struggle to reconcile duty with conscience. Ango’s legacy hinges on balancing pragmatism and remorse, acting as an intermediary between rival factions. Efforts like recruiting the Seventh Agency to erase Dazai’s criminal record hint at unresolved guilt and indirect atonement. While his motives remain shrouded in professional obligation, his choices consistently prioritize crisis mitigation, even when straining personal loyalties or ideological coherence.