Everyone in Class 3-F has something in common but they have yet to realize what it is. For some reason, a force in the universe has sought out to punish these students in any way possible. Touma is a girl who wants to end her life desperately, however, she discovers an abnormality is keeping that from happening. Koji is forced into a hikikomori recovery program where he has to rehabilitate a former classmate. All the while, two upperclassmen seem to have some insight on the strange occurrences surrounding Class 3-F.