A man working a job far removed from his childhood dreams gets wrapped up in an unexpected situation...!. Becoming a monster, he aims once again to fulfill his lifelong dream...!.

Long ago, a war broke out in Japan that pitted Kantou against Kansai and divided the country. Kansai became dependent on Kantou, but slowly the police and government began losing control of Kansai to criminals known as Akudama.

In Fujisawa, Sakuta Azusagawa is in his second year of high school. Blissful days with his girlfriend and upperclassman, Mai Sakurajima, are interrupted by the appearance of his first crush, Shoko Makinohara.