Ultraman Mebius Gaiden: Hikari Saga (2006)

In this DVD mini-series companion to "Ultraman Mebius", the reason behind Ultraman Hikari's transformation into Knight Hunter Tsurugi is revealed. The first side story, separated into three parts and launched as FLET's internet television service, before being released on DVD in 2007. The story took place during the series' run, featuring Ultraman Hikari as the main viewpoint character, ranging from his past to his membership in Space Garrison.