Game Over

One by one, citizens from all over the country have been disappearing. Not a single person has yet to be found. Aoi has just recently proposed to Uruha, who both live happily in a small apartment right outside of Tokyo. As the number of citizens keep decreasing, the one behind it all is gaining power, aching to complete his so called experiment.
Over two decades ago, a group of researchers created genetic modifications in search for a new system of defense for future combat.
Uruha is disheartened about all the news of the kidnaps, but when he becomes one of the victims, his whole world crumbles right before his eyes.