Midori Kanda is cosplaying as Kuroko from Toaru Kagaku no Railgun. Toaru Kagaku no Railgun (とある科学の超電磁砲, lit. A Certain Scientific Railgun) is an anime series based on the manga of the same name, which itself is spin-off of the light novel, manga and anime series Toaru Majutsu no Index. The manga is serialized in Dengeki Daioh and written by Kazuma Kamachi, who is also the author of the Toaru Majutsu no Index light novels and illustrated by Motoi Fukuyama. Set in Academy City before and during the same time of the events of Toaru Majutsu no Index, the plot focuses on Mikoto Misaka, an electromaster who is the third most strongest esper in Academy City and her friends, Kuroko Shirai, a Teleporter and Mikoto's roommate, Kazari Uiharu, Kuroko's partner in Judgment, the city's public safety committee and Kazari's friend, Ruiko Saten. The anime tells the lives of these four friends and their adventures in Academy City.