電撃文庫
"Golden Time" began as a light novel series written by Yuyuko Takemiya, with illustrations by Ēji Komatsu. ASCII Media Works published 11 novels between September 10, 2010 and March 8, 2014 under their Dengeki Bunko imprint; eight comprise the main story, while the other three are side story collections. Portions of the series have also been serialized in "Dengeki Bunko Magazine".