Aoi-kun to Schrodinger no Kanajo-tachi (Volume)

is the first volume of the Aoi-kun to Schrodinger no Kanajo-tachi light novel series, written by Nanami Watari and Illustrated by Mogomo. It was released under the Dengeki Bunko Imprint in September 2013.

Synopsis
Aoi, a boy who lives a life that shifts the parallel world every day from an early age. However, from a small opportunity, the two worlds with two childhood friends overlap-a science fiction youth love story presented at the end of summer.

(source: Dengeki Bunko Official Website - Translated)