Japan gave up its independence in order to avoid total collapse after the outbreak of an alien virus. 10 years later Japan is still a dependent nation under a not-so-friendly provisional government called GHQ. At the same time a boy named Shu has lost his past and himself. By chance Shu comes in contact with the beautiful and stoic Inori and the resourceful and charismatic Gai, both members of a militant resistance group called Funeral Parlor. Through his interaction with the members of Funeral Parlor and his acquisition of a genetically based power, the conflicted and withdrawn Shu slowly learns how to connect with others and reclaim himself. When the GHQ falls into the hands of a man who intends to use the virus to 'reset' earth's population, Shu and Funeral Parlor fight to stop him and reclaim Japan.