The story of a hero who has fallen into the darkness, Kakine Teitoku is now revealed. Academy City gathers the best of science and technology and promotes development of esper abilities. Among them, Kakine Teitoku, the second-ranked of the seven Level 5 espers with incredible power, encounters a young girl named Yuzuriha Ringo. His objective is to obtain data on the first-ranked Accelerator's thought patterns from Ringo, a test subject in the Dark May Project. However, elements of the Dark Side of Academy City, such as DA, Kuroyoru Umidori, and the Kihara Family, are also targeting the girl's power?!

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!

Mitsuhiro, who works for a loan shark, hits a girl on his way home. With no sign of movement or pulse, it seems all is lost. But then she suddenly comes back to life and stays at Mitsuhiro's house! It seems the girl is not human, and it's her first time living on Earth. Mitsuhiro ends up teaching her about "human life"...