Sakura Yuuto has recently faced a world that people suffer with sickness, people devour people, outbreaks, viruses spread, violent tests, and ruthless soldiers. He joined the military when he was 18. He never get a chance to save his teammates and his squad since his last mission because his squad was massacred into many pieces but he only loses his right arm, not to mention, the whole arm. He is been under alot of stress, trauma, and paranoia.

He tried to stop the Nightshade project from releasing it through out in Tokyo so he took the vial of the Nightshade virus and keep it somewhere safe.

How will he stop the outbreak?