General Monto Minatoya commanded the National Defense Forces' 15th Brigade as both brigade leader and task force commander. He exhibited a strict, no-nonsense demeanor and unwavering loyalty to military objectives, prioritizing goal achievement over ethical considerations. His senior status was reflected in his fit build, gray low-cut fade hairstyle, and consistent military uniform. Minatoya orchestrated Operation Foot Stamp, a military strike against SEAUn rebels. During this operation, he authorized the deployment of a classified nano-based VX nerve agent, disguised as emergency supplies. This action resulted in the deaths of the entire ground squad, including pilot Itsuki Otomo, whose drone was downed. Minatoya subsequently participated in covering up the mission's true nature and the illegal bioweapon deployment. Three months later, after a drone attack on the Ministry of Defense, Minatoya initially allowed former squad member Teppei Sugo to assist PSB inspectors Risa Aoyanagi and Tomomi Masaoka. He revoked this cooperation when Sugo confronted him about Operation Foot Stamp, ordering Sugo's arrest and torture to suppress investigation. Aoyanagi and Masaoka halted this by threatening to expose Minatoya's clouded Crime Coefficient and the military's complicity. Minatoya's actions ignited a chain of revenge. Itsuki Otomo's widow, Rin Otomo, miscarried upon learning of her husband's death and the cover-up. Seeking retribution, she infiltrated the National Defense Forces base and assassinated Minatoya. His death occurred shortly after the cover-up unraveled and before he could face legal consequences for authorizing the operation.