Girls frontline: Legend of the Ghosts: The twin Gods

Before FTac Recon capture and before the Girls Frontline story event, in 2031, the research facility located on the island of Japan territory, an island named shi no asa sa or prefer as Shallow of Death which is now used by US research staff developed the new weapon after the First Belian Incident one year. The group of S T-Dolls controlled the facility, but few rebelled against the United States Government and G.H.O.S.T led by the Rogue S T-Doll EX1 command. Their goal is to target advanced weapon systems like Metal Gear REX, and Metal Gear Tarantula a gigantic robotic system platform with worldwide nuclear strike capabilities. It is unknown why EX1 and his few fellow S T-Doll turned against the government. The US Government informed the G.H.O.S.T led by the CEO David Hesh, commissioned the best S T-Doll of Number 1 FTac Recon to go to shi no asa sa Island and stop EX1