...Iru! takes place in a high school with a large mechanical clock in the center. You control an upper classman who, along with his fellow students and teachers, finds himself locked inside the school when staying late to finish a project. As the bodies start to pile up your goal is to escape the school while saving your girlfriend and as many of your fellow classmates as you can.

...Iru! takes place in a high school with a large mechanical clock in the center. You control an upper classman who, along with his fellow students and teachers, finds himself locked inside the school when staying late to finish a project. As the bodies start to pile up your goal is to escape the school while saving your girlfriend and as many of your fellow classmates as you can.