Carolina McLachlan

"The greatest crime sin in the library is to return the books you have taken back on the safe textile shelves. It's worth every million deaths."

- Affiliation: Academy Librarian Teacher
- Birthday: June 27
- Height: 152 cm
- Three Size: B75(A)/W59/H76
- Likes: History books, dramas
- Dislikes: Bad manners in her library

The librarian who alone manages the vast library of the Academia.
She is a plain-looking, bespectacled, clumsy girl who is often seen running around the library busily.
She is nicknamed "Caro-chan" by the students. It is said that if anyone make noise or treat books roughly poor in the library, thunder will strike them.