仮面ライダークウガ
, written by Naruhisa Arakawa, is part of a series of spin-off novel adaptions of the Heisei Era Kamen Riders. The story takes place 12 years after the series, where Yusuke Godai defeated the Grongi as Kamen Rider Kuuga. Ichijo is still trying to research the remains of the Grongi Tribe until rumors of a mysterious surfaces on the internet, which reminds Ichijo of Godai. The novel was originally planned to be released on November 30, 2012, however it was delayed until June 2013.