The second Toaru Majutsu no Index light novel volume was first published on June 10, 2004. Written in a span of 17 days, it is currently the quickest novel written by the author, Kamachi Kazuma. The novel continues with magic side affairs as Index is once again embroiled within it, while Kamijou Touma and Stiyl Magnus, two former enemies, are forced to team up to save another girl, Himegami Aisa, while Touma has to deal with the aftermath of his memory loss.