Shusuke Kaneko
In 2004, Yagi was credited as the Main Director for . The following year, he was promoted to Series Producer for 2005's Ultraman Max, where he made the popular decision to bring in acclaimed directors Shusuke Kaneko and Takashi Miike to direct episodes for the series. In 2007, he acted as the Series Organizer and Main Director for the late-night Ultraseven X. Around the same time, he also began work on his first feature film, Superior Ultraman 8 Brothers.