Dream Ranker Arc

Dream Ranker Arc is a story arc in the Toaru Kagaku no Railgun manga series. The story focuses on a series of events involving a group of people called Dream Rankers and the trend of sharing dreams using a specific kind of technology.

Dream Ranker Technology
A recent trend among the student population of Academy City involves a set of cards and related technology that allows a person to capture one's dreams and store it in a card-like form for other people to use. The fad manages to seep through the School Garden of Academy City's District 7, allowing one of its students to acquire and share her own dreams with others.

Shared Dreams
During class, Misaka Mikoto and Shokuhou Misaki enter a typical short argument against each other. A third girl involved, who is a third-year member of Misaki's clique, feels responsible for causing the encounter between the two and meets with Mikoto later during the day. Here, as a peace offering, she hands a card to Mikoto. Mikoto does not know anything about the card she received, but her friend Saten Ruiko explains that it is part of a recent trend involving cards used to share dreams with other people. Curious about how the card works, Mikoto uses it that night and ends up in a fairytale land with several Gekota-like characters serving a queen who resembles Shokuhou herself. In her rage after being dressed as a maid and forced to serve Shokuhou, she snaps out of her dream.