With the Daihasei Festival behind them, an unusual calm has settled over Academy City -- that is, until a weird rumor begins to circulate. Supposedly someone has created a machine that can manipulate what a person dreams, allowing good dreams to be shared. But when it's revealed that these altered dreams affect reality itself, is this newest Esper invention a gift -- or a curse?

This book reads from right to left. Translated from the Japanese. Translation of: Toaru kagaku no railgun. 11.