Synopsis: Gun Dragon Σ (Colored)

By 2030, Earth's space boundaries had officially opened, welcoming visitors from far-flung planets within the system. However, the government's determination to regulate trade forced these extraterrestrial beings to congregate solely on the man-made island of Dejima, located just off the shores of Okinawa. Tensions soared as diverse species clashed, prompting the creation of a specialized group known as the Dragon Gun, composed of both humans and aliens, whose singular objective was to maintain order. During a routine mission, Officer Σ (Sigma) intercepted a convoy transporting illicit goods and uncovered a Mumère - an underwater creature whose allegiance lay in protecting priceless intelligence, prompting it to take its own life. This event kickstarted Officer Σ's prolonged investigation.