Edited google translation of the story summary: "Amber, a collage student, is selected as a beta tester for 'Game Stealth', a new portable game machine. But this 'Game Stealth' was more than just a game machine... Amber, through a coincidence or inevitability, has gained an unidentified power from this handheld console. She has also been unwittingly caught in a conflict between an international terrorist organization and the FBI because of it. Will she be able to use the power she obtains for a good cause?"