The Library is, as per the name, the library of the Magical Camp. It is located on a small island in the southwest of the camp, where all sorts of books are kept. The library is managed by the Head Librarian Ariana and the Acting Librarian Melancia. Numerous Magical Girl trainees can be found studying here.
The design of the library uses unreal principles to relax some physical laws, allowing for it to be larger on the inside than the outside, though this makes leaving the Library via any opening other than the front door rather dangerous. The layout of the library consists of an underground classroom, two above ground publicly accessible library floors, as well as a third floor on top which has been sealed, becoming the optional dungeon Sealed Archives.
Ground Floor
A floor filled with bookshelves and several tables for students to work at.
Melancia is present here manning the front desk. Speaking with her here allows Eric(a) to buy the Bestiary and Scan Scope, as well as repay any eventual loans. There is also an event with Olivia overworking herself after completing the Alaska Mission. After the Magico Cursed Grimoire has been beaten in the Sealed Archives, any eventual surplus books from there can be given to Melancia.
Underground Classroom
A typical classroom filled with the things one would expect.
Nothing important currently happens here, with just the fairy Gloriosa present as the only thing interactable.
Upper Floor
Another floor full of books. Only one small desk is here compared to the four larger tables on the ground floor.
A Magical Girl named Caroline is always studying at the available desk and will provide help for completing Giselle's side quest involving getting him some books, as well as the second chance event for learning Lovely Barricade or Lunar Barricade. The ladder leading to the Sealed Archives is in the northeast corner of the room after it is unlocked. Left of the ladder is a ball gag, which is part of Natalie's BDSM events.
Sealed Archives
Above the publicly accessible floors is one more closed-off floor; this is the dungeon called Sealed Archives. Years ago Phyre sealed a Magico in there which was left undealt with, overrunning the floor with its Minions.
Accessing this area requires talking to Melancia once the Cutie Knights are a full team.