Dennō Coil (電脳コイル, Dennō Koiru, lit. "Electric Brain Coil" or "Computer Coil") is a Japanese science fiction anime television series depicting a near future where semi-immersive augmented reality (AR) technology has just begun to enter the mainstream.
Dennō Coil, in development for over a decade, is the series director debut of Japanese animator Mitsuo Iso. It premiered on NHK Educational TV on May 12, 2007. Due to the animators involved in its production and its unusually high-profile television broadcast time slot, Dennō Coil was highly anticipated.
Eleven years after the introduction of internet-connected, augmented reality eyeglasses and visors, Yūko Okonogi moves with her family to Daikoku City, the technological center of the emerging half-virtual world. Yūko joins her grandmother's "investigation agency" comprised of children equipped with virtual tools and powerful metatags. She quickly crosses paths with Yūko Amasawa, an expert hacker of the virtual environment, as Amasawa relentlessly seeks to "unlock" the mystery of a computer virus that emerges from an inaccessible corrupted space.