Miu Iruma is rumored to be the meanest delinquent in School. Shuichi Saihara keeps his distance from her at all times. however....Miu's Reputation changes when Shuichi and Miu have a faithful encounter.

The Fallout follows a timeline a few years after 2020, now everything is at war, everything will get complicated and stronger until it self-destructs. Cherish every memory on Earth, cherish this planet before it fades away into the endless abyss of deep space.