Pierre Taki

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.

Humanity is under attack by human-mimicking flesh-eating alien parasites. One parasite bonds with his young high school student host, and he convinces the parasite to help him stop the others.

A 21-year-old girl is released from prison, only to deal with the neighborhood gossip about her and family conflicts. She decides to save one million yen, move to where no one knows her and keep repeating the process.