Full Metal Panic! Surplus

When an unidentified Arm Slave suddenly appears in the Taiwan Strait near mainland China, the covert military organization MITHRIL swiftly mobilizes a response. Melissa Mao and her specialized team are dispatched to a politically divided Hong Kong with strict orders to investigate the incident and track down the rogue pilot responsible for deploying the mysterious machine. As Mao’s unit delves deeper into the scattered reports surrounding the unauthorized Arm Slave, their investigation uncovers a surprising connection to MITHRIL’s own past. The evidence points toward a familiar face: a former candidate from Sousuke Sagara’s rigorous training days in Belize. This individual was ultimately passed over and never recruited into the organization, yet has now resurfaced as the prime suspect behind the escalating crisis. The revelation transforms a standard reconnaissance operation into a deeply personal conflict. With tensions rising in the fractured streets of Hong Kong, Mao and her team must confront a highly capable adversary who possesses intimate knowledge of their tactics. What begins as a search for an unknown perpetrator quickly evolves into a dangerous reckoning with a ghost from Sousuke's history, forcing the operatives to neutralize a threat born from MITHRIL's own rejected ranks.