The long-awaited 3rd installment of the transformation heroine tampering animation “Shion” is here! The shadow of Geist, the space-time invader, infests the darkness of the school.A secret battle between people from another dimension that has continued since time immemorial. What is the relationship between humans and Geist? What is a mental virus? What is DOLL? The fate of the main character Hiroki, who is invaded by demons...! ?