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 that aired from April 2, 2008 to March 18, 2009. It was a joint collaboration between WIZ and Production I.G. 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.