Hotori Asami

In the aftermath of World War II, "Sibir Base" stands isolated in a region littered with abandoned biological weapons known as "Iron Army." Leichtes, individuals brought from a defeated nation to atone for war crimes, live at this base. As they carry out their daily routines, they find themselves consumed by memories of what they have lost.

Tomohiro Izumi, an introvert, is randomly selected as student council president, but rumors circulate, leading to an unprecedented battle with former president Shio.