The People I Interact with in Zongman's Library Are All Girls.

This is a library where all the books in the world end up, and it is also the final tomb of all books. Girls from other worlds often come here through the libraries of their worlds. Mai Sakurajima, a patient with puberty syndrome Literary girl Kotobuki Nanase Danterian, known as the Lady of the Black Book Index from A Certain Magical Index and other various girls. It's probably a daily manga with a harem and no stallions. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.