Guests possessing an invitation visit the Library in pursuit of Books, each with their own motives.
Defeating guests in battle allows you to turn them into Books.

Aside from receiving Guests, you can battle Abnormalities possessing the Librarians to awaken them from their slumber.
They'll prove a worthy addition to your forces once woken up.

The Books created from Guests can guide you to the next invitation or be used to extract Pages and obtain new abilities.
Receive powerful Guests to gain use of potent Pages.

This game includes an artbook and soundtrack.
You can look back on records of the City, listen to the music from Receptions, and more.
The artbook includes the new Japanese voice cast.