Zankyou no Terror
English title: Terror in Resonance
Japanese title: 残響のテロル
Alternative titles: Terror in Tokyo, Terror of Resonance
Type: TV
Source: Original
Episodes: 11
Status: Finished Airing
Aired: Jul 11, 2014 to Sep 26, 2014
Broadcast: Fridays at 00:50 (JST)
Duration: 22 min per ep
Rating: R - 17+ (violence & profanity)
Studios: MAPPA
Producers: Aniplex, Dentsu, Fuji TV, Tohokushinsha Film Corporation, Kyoraku Industrial Holdings
Licensors: Funimation
Genres: Mystery, Suspense
Themes: Detective, Psychological

Painted in red, the word "VON" is all that is left behind after a terrorist attack on a nuclear facility in Japan. The government is shattered by their inability to act, and the police are left frantically searching for ways to crack down the perpetrators. The public are clueless—until, six months later, a strange video makes its way onto the internet. In it, two teenage boys who identify themselves only as "Sphinx" directly challenge the police, threatening to cause destruction and mayhem across Tokyo. Unable to stop the mass panic quickly spreading through the city and desperate for any leads in their investigation, the police struggle to act effectively against these terrorists, with Detective Kenjirou Shibazaki caught in the middle of it all.

Zankyou no Terror tells the story of Nine and Twelve, the two boys behind the masked figures of Sphinx. They should not exist, yet they stand strong in a world of deception and secrets while they make the city fall around them, all in the hopes of burying their own tragic truth.

[Written by MAL Rewrite]

Episodes 1 and 2 were previewed at a screening in Los Angeles at Anime Expo on July 5, 2014. Regular broadcasting began on July 11, 2014. In an interview with Otaku USA Magazine director Shinichirou Watanabe stated that the music of Icelandic band Sigur Rós gave him visual images that inspired the series and its soundtrack. He also states that the team went to Iceland to record the music.