Dennou Coil

Dennou Coil (Den-noh Coil) is a 2007 Japanese science-fiction anime created, written, and directed by Mitsuo Iso and animated by Madhouse. It first aired on NHK Educational TV from May to December 2007 across 26 episodes. The story unfolds in the fictional city of Daikoku in the year 2026, a near-future setting where wearable augmented-reality glasses, called cyberglasses, have become an everyday tool. Through these glasses, residents see a digital layer laid over the physical world, complete with virtual pets, persistent online avatars, and information overlays woven into ordinary streets and schoolyards.

The narrative follows a group of grade-school children who treat this augmented layer as their playground and frontier. Eleven-year-old Yuko Okonogi, nicknamed Yasako, moves to Daikoku with her family and is quickly drawn into the world of corrupted spaces, obsolete software, and the urban legends that the local kids chase. Armed with hacking tools, virtual gadgets, and a faithful cyberpet, the children explore glitches in the city's digital infrastructure, navigate the boundaries patrolled by an enforcement program, and uncover mysteries that the adult world has largely overlooked or chosen to forget.

Praised for its imaginative world-building and its emotionally grounded coming-of-age story, Dennou Coil is frequently cited as a prescient depiction of augmented reality years before the technology entered the mainstream. Beneath its playful surface of digital pets and schoolyard adventures, the series explores grief, memory, and the porous border between the virtual and the real. The show won the Japan Media Arts Festival's Excellence Award for animation and developed a lasting cult following among fans of thoughtful, idea-driven science fiction.