Also known as: アストラル・バディ
とある科学の超電磁砲外伝 アストラル・バディ (Toaru Kagaku no Railgun Gaiden: Astral Buddy)
A spin-off manga of Toaru Kagaku No Railgun written by Kamachi Kazuma and drawn by Nogi Yasuhito, starring Hokaze Junko and other Tokiwadai students and taking place in Tokiwadai Middle School.