Double Cast I

is the first volume of the Double Cast light novel series, written by Kyoichiro Takahata and Illustrated by Yu Kinutani. It was released under the Dengeki Bunko Imprint in February 2000.

Synopsis
Ryosuke Kawasaki fell from the roof of the building and lost consciousness. He wakes up in a strange house and heads to his home, where he sees his funeral. Ryosuke Urawa encounters a fall accident of a strange young man on his way home. Ryosuke faints in the face of a disaster. It was the beginning of mysterious memory loss. Aki Kawasaki was confused by a strange boy who behaved like her late brother. But she gets to know. Her crisis approaching herself and her heart trying to protect her ... A masterpiece by Kyoichiro Takahata following "Time Leap".

(source: Bookwalker JP - Translated)