About the book: year / Going on a country trip with classmates, third-year student at Tokyo University Shun Severov had no idea how dramatically his life would change. On the second day of rest, returning to camp from a walk, Shun and four of his acquaintances discover the rest of the students killed and encounter a mysterious man in black armor at the crime scene. As a result of their collision, an unknown force transports the five to a world alien to them. Now they have to understand why they were here.