The Imaginary Numbers flee to Japan where they support a coup d'état hatched by Masao Sasaki, the ultra-nationalist JDF Chief of Staff who ordered the Alaska raid. Kazuki's group follows them to Japan, where he is reunited with his estranged father Isao Takemura. They manage to defeat the coup forces, clear their names and pursue the Imaginary Numbers back to Ocean City, a floating island located off Okinawa. Although they finally defeat the Imaginary Numbers and safely detonate the original MIDAS out at sea, the game's ending will either be resolved or left ambiguous depending on the scenario chosen.