Genre: Suspense

Satoru and Saki have been split up from the rest of the group and captured by the outside Monster Rat group.

As the library continues to explain the history of the world, a danger looms in the background.

The group has rowed past their designated safe areas in search of monsters. What they find is worse than what they originally imagined.

Another student is removed from the roster. Saki uses her power outside of class.