Toaru Kagaku no Railgun (light novel)

Toaru Kagaku no Railgun SS (とある科学の超電磁砲SS) (tentative) is a light novel written by Kamachi Kazuma, which will be released for celebrating the Toaru Kagaku no Railgun manga's 15th anniversary in Dengeki Bunko.

Publisher's Summary
A new Railgun story by Kamachi Kazuma is about to begin!

Mikoto, Kuroko, Uiharu, and Saten ...... are all involved in this story!! In addition, the illustrations will be drawn in full color by creators who have been involved in the "Toaru" series, such as Haimura Kiyotaka, Kogino Chuuya, Fuyukawa Motoi, Yamaji Arata, Tachitsu Teto, Nogi Yasuhito, and Kisaragi Nankyoku. Expect a collaboration you won't see very often!