Keitai Sousakan 7

K-tai Investigator 7 (ケータイ捜査官７（セブン）, Kētai Sōsakan Sebun^?, Cellphone Investigator Seven) is a 2008 Japanese television drama which aired from April 2, 2008 to March 18, 2009. It was a joint collaboration between WIZ and Production I.G. One of the episodes was directed by Takashi Miike. it is described as a science fiction tokusatsu action drama. It was replaced in its time slot by an animated cartoon, Mainichi Kaasan, after it ended. A second series titled K-tai Investigator 7: Next (ケータイ捜査官７NEXT, Kētai Sōsakan Sebun Nekusuto^?) was distributed online beginning in May 2009.

Keita Amishima is a high school freshman who gets involved in Under Anchor, an organization formed to bring cyber criminals to justice using advanced technology. Taking the place of a previous Under Anchor agent, Keita is paired up with Phone Braver 7, a cellphone robot. Together, the two track down the high-tech criminals as well as their benefactor, the renegade Phone Braver 01. But in the process, the two learn of a conspiracy within Anchor itself tied to its mysterious ex-agent Magira.

Under Anchor (アンダーアンカー, Andā Ankā^?) is a branch of Anchor, a major cellular telephone service provider, that carries out investigative field missions related to data and technology crimes. It created and maintains the Phone Bravers. Anchor has a network supervising system named Eliza (エライザ, Eraiza^?), which web access and hacking by the Phone Bravers are performed through.

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Wikipedia