Humanity is suffering from a series of mysterious murders across the globe, known as the ‘Mincemeat murders’. High school student Izumi Shinichi has a parasite living off him, having replaced…

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.

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…