Chisako Hara

100 years ago, titans suddenly appeared on Earth. Soon, human civilization veered on collapse due to the titans. Humans then built a giant wall to defend themselves. Within the giant walls, humans lived in peace, but, 100 years later, the giant wall is broken.

A woman in the midst of an unpleasant divorce moves to an eerie apartment building with her young daughter. The ceiling of their apartment has a dark and active leak.