The Chrysanthemums After World War I, a secretive lab began experimenting on children with supernatural abilities. These experiments led to the creation of a deadly virus derived from a mysterious death-linked flower. The virus eventually triggered a global apocalypse, though the true culprits—the company behind the lab—remained hidden. Rebranding themselves, the company spread new labs across the U.S. to continue virus research under the guise of finding a cure.

• Thriller