"Nene and Kou want to learn more about their mysterious friend, Hanako-kun--and what better way to do that than by hunting down school mystery number five, "The Four P.M. Bookstacks"?! Rumors say a secret door in the library leads the way to a supernaturally special collection. The Bookstacks know everything about everyone who's attended Kamome Academy--past, present, AND future! But whatever you do, don't read the red books ... or your future will be drenched in blood!"--Back cover.

This book is published in true Japanese manga format which reads right-to-left.