Nine students were stuck in an old high school building of Alchem High...  and all night, one by one, death turns up between them.  ForewordI received seven letters that night in Alchem High.  And each letter corresponds to another student’s death.  That night, we didn’t know if it was suicide or murder… All I know is that all letters that I’ve received says the same thing.  “It’s Jung Eunji who killed me.”