A Certain Magical Index SS Novel Volume 1 is written by Kazuma Kamachi with illustrations by Kiyotaka Haimura.

Kamijou Touma faces his roughest challenge yet-a classroom hot pot party! Meanwhile in London, the women's dorm in a base of magicians may never see another day as wild as this one. And in the underbelly of Academy City, Accelerator stumbles upon someone who has been waiting for him all this time...? Here begins the supplementary SS series of A Certain Magical Index!