Dai Densetsu no Yūsha no Densetsu is the sequel to Kagami’s original Densetsu no Yūsha no Densetsu (The Legend of the Legendary Heroes) light novel series.
The novels also inspired the Nantonaku Densetsu no Yūsha no Densetsu manga series by series illustrator Saori Toyota that was compiled into one book volume.
The original series ran for 11 volumes from 2002 to 2006, and Kagami released the first volume of Dai Densetsu no Yūsha no Densetsu in 2007.
Kagami also wrote the 11-volume short story collection series Toriaezu Densetsu no Yūsha no Densetsu from 2002 to 2007, and the eight-volume Shin Denyūden: Kakumei-hen – Ochita Kuroi Yūsha no Densetsu novel spinoffs from 2007 to 2013.