The series was first introduced in the Purify "The Great Gatsby" - Part 2 event. For the duration of the event, it was known as the "FOREIGN-series" (異).
Unlike the Tainted Book Delve shelves, each of which consist of four different literary work, this series has only one work split into four part.
The Great Gatsby 5
The Great Gatsby 6
The Great Gatsby 7