Nagaishi Takao was a director of various tokusatsu franchises. Making his name in Super Sentai, he would be a major factor during the revival of the Kamen Rider franchise.
He passed away on March 31, 2013, as his body succumbed to progressive supra-nuclear palsy at the age of 68. Alongside Tohru Hirayama, who also passed away in 2013, Nagaishi received a commemorative message in the credits of Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai (2014), dedicating the film in memory of them both.
(Source: kamenrider.wikia.com)